this is my code in python I am trying to open a file and then print the contents on my console but when i run it nothing prints in the console
def file_to_dictionary(rosterFile):
myDictionary={}
with open(rosterFile,'r') as f:
for line in f:
myDictionary.append(line.strip())
print(myDictionary)
return myDictionary
file_to_dictionary((f"../data/Roster.txt"))
In: Computer Science
Use a JavaScript program to:
Stimulate a coin tossing environment using random functions and using a for loop - toss the coin 100 times and print the number of heads and tails.
A detailed answer would be appreciated, I would like to learn from it rather than just know the answer. Thanks in advance!
In: Computer Science
Change the format of the given code to two columns, add a sub title and an author name and increase the color and thickness of the column-rule. Add an image and float the text around the image.
<!DOCTYPE html>
<!-- Fig. 5.17: multicolumns.html -->
<!-- Multicolumn text in CSS3. -->
<html>
<head>
<meta charset = "utf-8"›
<title>Multicolumns</title>
<style type = "text/css"›
p
{ margin:0.9em Oem; }
.multicolumns
{
/* setting the number of columns to 3 */
-webkit-column-count: 3;
-moz-column-count: 3;
-o-column-count: 3;
column-count: 3;
/ *setting the space between columns to 30px */
-webkit-column-gap: 30px;
-moz-column-gap: 30px;
-o-column-gap: 30px;
column-gap: 30px;
/ *adding a 1px black line between each column */
-webkit-column-rule: 1px outset black;
-moz-column-rule: 1px outset black;
-o-column-rule: 1px outset black;
column-rule: 1px outset black;
}
</style>
</head>
<body>
<header>
<h1>Computers, Hardware and Software<h1/>
</header>
<div class = "multicolumns">
<p>A computer is a device that can perform computations and
make logical decisions phenomenally faster than human beings can.
Many of today's personal computers can perform billions of
calculations in one second—more than a human can perform
in a lifetime. Supercomputers are already performing thousands of
trillions (quadrillions) of instructions per second! To put
that in perspective, a quadrillion-instruction-per-second computer
can perform in one second more than 100,000 calculations for every
person on the planet! And—these "upper limits" are
growing quickly!</p>
<p>Computers process data under the control of sets of
instructions called computer programs. These programs guide
the computer through orderly sets of actions specified by people
called computer programmers. The programs that run on a computer
are referred to as software. In this book, you'll learn today's key
programming methodology that's enhancing programmer productivity,
thereby reducing software-development
costs—object-oriented programming.</p>
<p>A computer consists of various devices referred to as
hardware (e.g., the keyboard, screen, mouse, hard disks, memory,
DVDs and processing units). Computing costs are dropping
dramatically, owing to rapid developments in hardware and software
technologies. Computers that might have filled large rooms and cost
millions of dollars decades ago are now inscribed on silicon chips
smaller than a fingernail, costing perhaps a few dollars each.
Ironically, silicon is one of the most abundant
materials—it's an ingredient in common sand. Silicon-chip
technology has made computing so economical that more than a
billion general-purpose computers are in use
that more than a billion general-purpose computers are in use
worldwide, and this is expected to double in the next few
years.</p>
<p>Computer chips (microprocessors) control countless
devices. These embedded systems include anti-lock brakes in cars,
navigation systems, smart home appliances, home security systems,
cell phones and smartphones, robots, intelligent traffic
intersections, collision avoidance systems, video game controllers
and more. The vast majority of the microprocessors produced each
year are embedded in devices other than general-purpose
computers.</p>
<footer>
<em>© 2012 by Pearson Education, Inc.
All Rights Reserved.</em>
</footer>
</div>
</body>
</html>
In: Computer Science
Objectives
Introduction: Mission to Mars
Your friend has been playing a new Mars Colony simulator nonstop! They are always talking about how cool it would be if they could be a on the first real-life mission to Mars! To amuse your friend, you have decided to create a series of programs about the possible first colony on Mars.
Problem: Where Can We Get the Best Deal? (marssupplier.c)
Now that we know how much fuel we need and how much equipment we can take, we need to determine which supplier will give us the best deal on what we need to purchase. We will poll a number of suppliers to see what kind of pricing they can give us and select the supplier who has the best deal.
In this program, we want to ask the user for information about suppliers. We can assume that there will be at least one supplier, but we will not know ahead of time how many suppliers there might be. After each supplier’s information, ask the user if there is another supplier to consider.
For each supplier, ask the user for the deal that the supplier is willing to offer. Keep track of the best possible deal and which supplier (identified as a number: 1, 2, 3, etc.) is offering it. After all the suppliers have been considered, tell the user which supplier offered the best deal.
Input Specification
Output Specification
For each supplier, prompt the user with:
What is the price for supplier #X?
To ask about additional suppliers, prompt the user with:
Is there another supplier to consider?
For the final print out, tell the user which supplier they should select, including the best price rounded to two decimal places:
Supplier #X had the best price at $Y.YY.
Output Samples
Below are some sample outputs of running the program. Note that these samples are NOT a comprehensive test. You should test your program with different data than is shown here based on the specifications given above. In the sample run below, for clarity and ease of reading, the user input is given in italics while the program output is in bold. (Note: When you actually run your program no bold or italics should appear at all. These are simply used in this description for clarity’s sake.)
Sample Run 1
What is the price for supplier #1?
500.49
Is there another supplier to consider?
N
Supplier #1 had the best price at $500.49.
Sample Run 2
What is the price for supplier #1?
250.39
Is there another supplier to consider?
Y
What is the price for supplier #2?
500.49
Is there another supplier to consider?
Y
What is the price for supplier #3?
178.72
Is there another supplier to consider?
Y
What is the price for supplier #4?
300.00
Is there another supplier to consider?
N
Supplier #3 had the best price at $178.72.
In: Computer Science
C++ programming test 2, chapters 6,7,& 9 on Functions, Arrays, & Pointers
1. Create a one dimensional array, Ages, which will hold 4 ages. Each age is an int.
b. Write a for loop and print, in reverse order the 4 values stored in memory assuming that the ages in the previous question have already been entered with a space between each value. Use subscript notation.
short cnt;
c. Do the same as above, but use pointer notation.
2. Create, but do not initialize with data, one array for each of the following situations. Use an appropriate data type and name for each array:
a. holding the height of 10 students - 1 dimension - use most efficient storage size
b. holding payments per year arranged like this table to be printed in a book
(Year and 1,2,3,4,5 are NOT part of the array. Neither are 6.5%, 6.75%, 7.0%)
Year
1 2 3 4 5
6.5% 123.23 104.32 99.23 80.75 67.45
6.75% 131.24 111.54 103.23 90.55 78.95
7.0% 141.54 120.54 107.43 98.67 88.98
There will be 75 tables like this for different amounts in the book.
Create the array to hold these 75 tables.
3. Using the array name and proper subscripts, print the 120.54 from the above array considering it is the 62nd table in the array of tables.
4. Convert to pointer notation using the same variable:
data[9]
ddata[2][5]
5. Use cout to print the address at which the following array is stored in the computer memory.
short YourData[12];
a. Print the address of the first element of the array
b. Print the address of the fifth element of the array
6. a. Given the following array and variables, print it so that all the items from 1 column are printed before any items on the second column, etc. Use for loop constructs, NOT while loop. Use subscript notation.
float TestData[10][20];
int row, col;
b. Dos the same as above using pointer notation.
7. Given the following, write the code to have C++ calculate:
long Arr [100];
a. Using the array name, Arr, calculate NUMBER OF BYTES IN ONE ELEMENT:
b. Calculate the NUMBER OF BYTES IN ONE ELEMENT using the data type
(problematic for future code maintenance).
c. Calculate the total number of bytes in the entire array.
d. Calculate the number of elements in the array.
Anything relating to reference variables or arrays will be so described. Assume any others are by value
8. Write the header line for the following functions - each function is named F1
b. A function returning a reference to an int and receiving a 2 dimensional array of double with 23 columns.
c. Returning an int and receiving 3 int reference variables.
9. Write the following functions in full, including header line and body. Call each F1.
a. Receives 4 arguments, two arrays of short and two int's, one for each array, containing the count of array elements in that array. The function computes one grand total for both arrays. It then returns the grand total.
b. Receives an array of long. Returns the 2nd value stored in the array.
c. Write a function to receive a 2 dimensional array of long double with 10 columns. Also you will receive a short value representing the number of rows. The function totals all of the amounts in the array. The total of the values is returned as a long double.
d. . This function, F1, receives a pointer to an int array and a pointer to a double as arguments. It then calls the function called F2, which has the following prototype:
void F2( int *arr, double num );
F1 is going to call F2 and send the array and the double value as arguments, receiving nothing back.
Write the entire function F1 which calls F2 as its only operation.
e. Change this function to reference variables:
float * fun1( float *a, int *b, float d)
{
*a = *b * d;
return a;
}
Rewrite the entire function below:
In: Computer Science
An amateur meteorologist wants to keep track of weather conditions during the past year's three -month summer season and has designated each day as either rainy ('R'), cloudy ('C'), or sunny ('S'). Write a modu lar program that stores this information in a 3 x 30 array of characters, where the row indicates the month (0 = June, 1 = July, 2 = August) and the column indicates the day of the month. Note that data is not being collected for the 31st of any month . The program should begin by calling a function to read the weather data in from a file. Then it should create a report that displays for each month and for the whole three-month period, how many days were rainy, how many were cloudy, and how many were sunny. To help it do this, it should use a value -returning function that is passed the array, the number of the month to examine, and the character to look for ('R', 'C', or 'S') . This function shou ld return the number of days the indicated month had the requested weather. Data for the program can be found in the Rai nOrShi ne. da t file located in the Chapter 8 programs folder on this book's companion website. please do this program in c++ and please add comments.
In: Computer Science
Consider the recursive formulation of the Binary Search algorithm. Given a sorted and non-decreasing list of comparable objects L, and a new item x, find the location (index) of x or indicated that x is not in L.
5a) Give a recursive algorithm for binary search. No, while, for, repeat etc statements are allowed. Only if, if else and assignment statements are allowed.
5b) Write a difference equation for the running time of your Binary Search algorithm. Solve your equation and express the performance of the algorithm in Θ(·) notation.
In: Computer Science
A prime number is a number that is only evenly
divisible by itself and 1. For example, the number 5 is prime
because it can only be evenly divided by 1 and 5. The number 6,
however, is not prime because it can be divided evenly by 1, 2, 3,
and 6.
Design a Boolean function called isPrime, that accepts
an integer as an argument and returns True if the argument is a
prime number, or False otherwise. Use the function in a program
that prompts the user to enter a number and then displays a message
indicating whether the number is prime. The following modules
should be written:
getNumber, that accepts a Ref to an integer,
prompts the user to enter a number, and accepts that
input
isPrime, that accepts an integer as an argument
and returns True if the argument is a prime number, or False
otherwise
showPrime, that accepts an integer as an
argument , calls isPrime, and displays a message indicating whether
the number is prime
The main module, that will call getNumber and
showPrime
In: Computer Science
During 1 30 minute observation, a web server received 2700 requests. The mean response time was 2 seconds. What is the mean number of queries in the system? Give both formula and result. Does your formula depend upon distributional assumptions?
In: Computer Science
In: Computer Science
You must write tests for the following:
all tests must be written in JUnit 5.
public class Customer {
private static int nextNumber = 1;
private int number;
private String firstName;
private String lastName;
/**
* Represents a customer with customer number (autogenerated), first and last name.
* @param firstName
* @param lastName
*/
public Customer(String firstName, String lastName) {
this.number = nextNumber++;
this.firstName = firstName;
this.lastName = lastName;
}
/**
* Returns the first name
* @return the first name
*/
public String getFirstName() {
return firstName;
}
/**
* Returns the last name
* @return the last name
*/
public String getLastName() {
return lastName;
}
/**
* Sets the first name
* @param firstName
*/
public void setFirstName(String firstName) {
this.firstName = firstName;
}
/**
* Sets the last name
* @param lastName
*/
public void setLastName(String lastName) {
this.lastName = lastName;
}
/**
* Returns the customer number
* @return the customer number
*/
public int getNumber() {
return number;
}
@Override
public String toString() {
return "Customer [number=" + number + ", name=" + firstName + " " + lastName + "]";
}
/**
* Customers are equal *only* if their customer numbers are equal
* @see java.lang.Object#equals(java.lang.Object)
*/
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
Customer other = (Customer) obj;
if (number != other.number)
return false;
return true;
}
}
import java.util.HashMap;
import java.util.Map;
/**
* Represents an order with an ordernumber (autogenerated), customer, and order lines with products and quantities.
*
* @author kwurst
* @version Fall 2018
*/
public class Order {
private static int nextNumber;
private int number;
private Customer customer;
private Map<Product, Integer> lines;
/**
* Represents an order with an ordernumber (autogenerated), customer, and order lines with products and quantities.
* @param customer
*/
public Order(Customer customer) {
this.number = nextNumber++;
this.customer = customer;
this.lines = new HashMap<Product, Integer>();
}
/**
* Adds a quantity of a product to the order. If the product is already in the order, increase the order quantity by the quantity.
* @param product
* @param quantity must be non-negative
* @throws IllegalArgumentException if the quantity is negative
*/
public void addToOrder(Product product, int quantity) {
if (quantity < 0) {
throw new IllegalArgumentException("Quantity must be non-negative.");
}
if (lines.containsKey(product)) {
lines.put(product, lines.get(product) + quantity);
} else {
lines.put(product, quantity);
}
}
/**
* Remove a quantity of a product from the order. If the product is already in the order, decrease the order quantity by the quantity.
* If the quantity is reduced to zero, remove the product from the order.
* If the product is in the order, return true. If the product is not in the order, return false.
* @param product
* @param quantity must be non-negative
* @return true if the product was in the order, false otherwise
*/
public boolean removeFromOrder(Product product, int quantity) {
if (quantity < 0) {
throw new IllegalArgumentException("Quantity must be non-negative.");
}
if (lines.containsKey(product)) {
if (lines.get(product) <= quantity) {
lines.remove(product);
} else {
lines.put(product, lines.get(product) - quantity);
}
return true;
} else {
return false;
}
}
/**
* Determine if a product is in the order
* @param product to check for
* @return whether the product is in the order
*/
public boolean contains(Product product) {
return lines.containsKey(product);
}
/**
* Determine the quantity of a product in the order
* @param product to check
* @return quantity of the product in the order
*/
public int getItemQuantity(Product product) {
if (contains(product)) {
return lines.get(product);
} else {
return 0;
}
}
/**
* Returns the total cost of the order (unit prices * quantity)
* @return the total cost of the order (unit prices * quantity)
*/
public double getOrderTotal() {
double total = 0;
for (Map.Entry<Product,Integer> entry : lines.entrySet()) {
Product key = entry.getKey();
Integer value = entry.getValue();
total += key.getUnitPrice() * value;
}
return total;
}
/**
* Returns the number of order lines.
* @return the number of order lines
*/
public int getOrderLineCount() {
return lines.size();
}
/**
* Returns the number of items in the order (sum of quantity of all lines)
* @returnthe number of items in the order (sum of quantity of all lines)
*/
public int getOrderItemCount() {
int total = 0;
for (Map.Entry<Product,Integer> entry : lines.entrySet()) {
total += entry.getValue();
}
return total;
}
@Override
public String toString() {
return "Order [number=" + number + ", customer=" + customer + ", lines=" + lines + "]";
}
/**
* Orders are equal *only* if their order numbers are equal
* @see java.lang.Object#equals(java.lang.Object)
*/
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
Order other = (Order) obj;
if (number != other.number)
return false;
return true;
}
}
public class Product {
private String sku;
private double unitPrice;
private String description;
/**
* Represents a Product with a SKU number, unit price, and description.
*
* @param sku
* @param unitPrice must be non-negative
* @param description
*/
public Product(String sku, double unitPrice, String description) {
if (unitPrice < 0) {
throw new IllegalArgumentException("Unit price must be non-negative.");
}
this.sku = sku;
this.unitPrice = unitPrice;
this.description = description;
}
/**
* Returns the unit price
* @return unit price
*/
public double getUnitPrice() {
return unitPrice;
}
/**
* Sets the unit price
* @param unitPrice must be non-negative
*/
public void setUnitPrice(double unitPrice) {
if (unitPrice < 0) {
throw new IllegalArgumentException("Unit price must be non-negative.");
}
this.unitPrice = unitPrice;
}
/**
* Returns the description
* @return the description
*/
public String getDescription() {
return description;
}
/**
* Sets the description
* @param description
*/
public void setDescription(String description) {
this.description = description;
}
/**
* Returns the SKU number
* @return the SKU number
*/
public String getSku() {
return sku;
}
@Override
public String toString() {
return "Product [sku=" + sku + ", unitPrice=" + unitPrice + ", description=" + description + "]";
}
/**
* Products are equal *only* if their sku numbers are equal
* @see java.lang.Object#equals(java.lang.Object)
*/
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
Product other = (Product) obj;
if (sku == null) {
if (other.sku != null)
return false;
} else if (!sku.equals(other.sku))
return false;
return true;
} In: Computer Science
can someone please find for me the characteristic of DBMS form this article, thank you
Relational database
A relational database is a DBMS that represents the data in a tabular form of rows and columns. A table is a representation of an entity. A table is a combination of columns and rows. Each column in a table represents an attribute of the entity, also known as fields or properties. Each row in a table represents a record, the data associated with an entity.
The following tabular data represents a Customer entity with attributes including ID, Company Name, Contact Name, Contact Title, Address, City, and so on. Each column of the table is an attribute (or property) of a Customer entity. Each row of the table represents a customer data.
Each column of a table has a data type that represents the kind of data a column can store. For example, the company name or customer name is a varchar type that can store characters, but a zip code is a numeric field and can store numbers only.
History of relational databases
Relational database concept was introduced by E. F. Codd at IBM in 1970 via his research paper "A Relational Model of Data for Large Shared Data Banks". Later in 1974, IBM introduced System R, that was a prototype of RDBMS.
Oracle database was the first commercially RDBMS that was released in 1979 by Relational Software, now Oracle Corporation.
Today, RDBMS are the most popular database management systems in the world.
Relationships in RDBMS
Relational databases are relational because of their relationships feature. RDBMS supports relationships between their entities and their attributes. A column of a table can have a relationship with another column of another table.
Let's look at the following 4 tables of Northwind database, Customer. Orders, Order Details, and Products.
In the above diagram, a Customer can have multiple orders and each order can have multiple products. The relationship between two table columns are represented by
Primary keys and foreign keys
A table in RDBMS typically has a unique private key (PK) that uniquely identifies each row in a table. The private key can be a single column or a combination of multiple columns. A primary key ensures that each row in a table is unique. PK is also used as a constraint to force data integrity. A table can contain only one primary key.
A foreign key (FK) is a column or combination of columns, that is used to create a relationship between two tables. When a PK is referenced in another table, it is called a foreign key on the referenced table.
RDBMS operations
RDBMS allow Create, Read, Update, and Delete (CRUD) operations.
SQL and relational databases
Structured Query Language (SQL) is the language that is used to query, update, and delete data in relational database management systems (RDBMS). SQL is a standard query language. SQL language’s queries are also known as SQL commands or SQL statements.
SQL provides DML (Data Manipulation Language) commands that are used insert, update and delete data. Common DML commands are INSERT, UPDATE and DELETE.
Learn more: What is SQL
Popular relational databases
There are hundreds of RDBMS. Here is a list of the most popular RDBMS.
Oracle
Oracle developed by Oracle Corporation is the most popular relational database system (RDBMS). Not only Oracle is an RDBMS, but also provides functionality for Cloud, Document Store, Graph DBMS, Key-value storage, BLOG, and PDF Storages. Recently. Oracle just announced an autonomous feature that allows the database to be intelligent and self-managed.
The current version of Oracle Database is 18c.
Oracle database is a relational database (RDBMS). Relational databases store data in a tabular form of rows and columns. The column of a database table represents the attributes of an entity and rows of a table stores records. An RDBMS that implements object-oriented features such as user-defined types, inheritance, and polymorphism is called an object-relational database management system (ORDBMS). Oracle Database has extended the relational model to an object-relational model, making it possible to store complex business models in a relational database.
One characteristic of an RDBMS is the independence of physical data storage from logical data structures.
In Oracle Database, a database schema is a collection of logical data structures or schema objects. A database user owns a database schema, which has the same name as the user name.
Schema objects are user-created structures that directly refer to the data in the database. The database supports many types of schema objects, the most important of which are tables and indexes.
A schema object is one type of database object. Some database objects, such as profiles and roles, do not reside in schemas.
MySQL
MySQL is the world’s most popular database that is open source and free. MySQL was acquired by Oracle as a part of Sun Microsystems acquisition in 2009.
In MySQL, the SQL part of “MySQL” stands for “Structured Query Language”. SQL is the most common standardized language used to access databases. Depending on your programming environment, you might enter SQL directly (for example, to generate reports), embed SQL statements into code written in another language, or use a language-specific API that hides the SQL syntax.
Key properties of MySQL:
SQL Server
SQL Server database developed by Microsoft is one of the most popular databases in the world. Initially launched in 1989 and written in C, C++, SQL Server is now widely used among major companies. SQL Server is also a part of Microsoft’s Azure cloud as Azure SQL Server. The current version of SQL Server is SQL Server 2019.
Similar to Oracle and MySQL, SQL Server is also a relational database management system (RDBMS).
Some popular SQL Server editions are:
Azure SQL Database is the cloud-based version of Microsoft SQL Server, presented as a platform as a service offering on Microsoft Azure.
Compact (SQL CE), the compact edition is an embedded database engine. Unlike the other editions of SQL Server, the SQL CE engine is based on SQL Mobile (initially designed for use with hand-held devices) and does not share the same binaries. Due to its small size (1 MB DLL footprint), it has a markedly reduced feature set compared to the other editions. For example, it supports a subset of the standard data types, does not support stored procedures or Views or multiple-statement batches (among other limitations). It is limited to 4 GB maximum database size and cannot be run as a Windows service, Compact Edition must be hosted by the application using it. The 3.5 version includes support for ADO.NET Synchronization Services. SQL CE does not support ODBC connectivity, unlike SQL Server proper.
SQL Server Enterprise Edition is the main database most companies buy that comes with every product feature.
SQL Server Developer Edition includes the same features as SQL Server Enterprise Edition but is limited to one license only that is used for development purposes by software developers.
PostgreSQL
PostgreSQL is a powerful, open-source, object-relational database system that uses and extends the SQL language combined with many features that safely store and scale the most complicated data workloads. The origins of PostgreSQL date back to 1986 as part of the POSTGRES project at the University of California at Berkeley and has more than 30 years of active development on the core platform. The current version of PostgreSQL is 11.4 that was released on 20 June 2019. PostgreSQL is written in C language and managed by the PostgreSQL Global Development Group.
PostgreSQL is known for its architecture, reliability, data integrity, robust feature set, extensibility, and the dedication of the open-source community behind the software to consistently deliver performant and innovative solutions.
IBM DB2
IBM Db2 database is a relational database that delivers advanced data management and analytics capabilities for your transactional and warehousing workloads. This operational database is designed to deliver high performance, actionable insights, data availability, and reliability, and it is supported across Linux, Unix and Windows operating systems.
The Db2 database software includes advanced features such as in-memory technology, advanced management and development tools, storage optimization, workload management, actionable compression, and continuous data availability.
With version 11.5, Db2 includes added AI functionality so that businesses can embrace forward-looking data science and AI technologies to retain competitive differentiation. Now you can leverage one platform that is both powered by AI and built for AI to optimize performance and availability while empowering your data scientists to find deeper insights.
SQLite
SQLite is a C-language library that implements a small, fast, self-contained, high-reliability, full-featured, SQL database engine. SQLite is the most used database engine in the world. SQLite is built into all mobile phones and most computers and comes bundled inside countless other applications that people use every day.
The SQLite file format is stable, cross-platform, and backward compatible and the developers pledge to keep it that way through at least the year 2050. SQLite database files are commonly used as containers to transfer rich content between systems and as a long-term archival format for data. There are over 1 trillion SQLite databases in active use.
MariaDB
MariaDB Server is one of the most popular database servers in the world. It’s made by the original developers of MySQL and guaranteed to stay open source. Notable users include Wikipedia, WordPress.com, and Google.
MariaDB turns data into structured information in a wide array of applications, ranging from banking to websites. It is an enhanced, drop-in replacement for MySQL. MariaDB is used because it is fast, scalable and robust, with a rich ecosystem of storage engines, plugins, and many other tools make it very versatile for a wide variety of use cases.
MariaDB is developed as open-source software and as a relational database, it provides an SQL interface for accessing data. The latest versions of MariaDB also include GIS and JSON features.
Informix
IBM Informix® is a fast and flexible database with the ability to seamlessly integrate SQL, NoSQL/JSON, and time series and spatial data. Key features of Informix includes real-time analytics, always-on transactions, and simplicity.
Azure SQL
Azure SQL Database is a general-purpose relational database-as-a-service (DBaaS) based on the latest stable version of Microsoft SQL Server Database Engine. SQL Database is a high-performance, reliable, and secure cloud database that you can use to build data-driven applications and websites in the programming language of your choice, without needing to manage infrastructure.
Azure SQL is fully managed, and fees are pay-per-use. Azure SQL provides advanced security with Azure AD authentication, Virtual Networks, Firewalls, Always Encrypted connections. Identify threats and vulnerabilities with built-in security.
In: Computer Science
What is the difference between an attribute and a metric? Give an example each of an attribute of a service that is done correctly, incorrectly, or not at all and a metric for it.
In: Computer Science
provide a JavaScript code that finds if the given word by user (prompt) is a Palindrome or no.
In: Computer Science
List the outputs delivered from each of the SDLC phases.
In: Computer Science