Question

Describe what a database system is and how it is used. What is a relational database system and how used in a company to benefit an organization? What does it mean to run a query?

Answer 1

A database (DB) is a collection of data that lives for a long time. Many systems fit this definition, for example, a paper-based file system, a notebook, or even a string with knobs for counting.

A Database Management System (DBMS) is a system (software) that provides an interface to database for information storage and retrieval. We are more interested in software systems rather than manual systems because they can do the job more efficiently.

Any business can use data to help make more informed business decisions. However, they must know where their data is and have a data management strategy.

Store and retrieve related information.

Aggregate and analyze business data.

Our customers use databases to collect all of the data from their applications.

There are opportunities with every business domain and every data domain.

Abstract layer for data management. Simple storage retrieved access control to optimization of queries. Persistence of application information.

A relational database is a type of database that stores and provides access to data points that are related to one another. Relational databases are based on the relational model, an intuitive, straightforward way of representing data in tables. In a relational database, each row in the table is a record with a unique ID called the key. The columns of the table hold attributes of the data, and each record usually has a value for each attribute, making it easy to establish the relationships among data points.

the advantages of using the relational database over any other type of database, a relational database helps in maintaining the data integrity, data accuracy, reduces data redundancy to minimum or zero, data scalability, data flexibility and facilitates makes it easy to implement security methods. Above all, a Relational Database Management system is a simpler database model, both to design and implement.

A query run is a request for data or information from a database table or combination of tables. This data may be generated as results returned by Structured Query Language (SQL) or as pictorials, graphs or complex results, e.g., trend analyses from data-mining tools.