Question

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Q1:

Data Modelling is the primary step in the process of database design. Compare and contrast Conceptual data model versus Physical data model. Illustrates with help of example to list down data (entities), relationship among data and constraints on data.

Q2:

What strategic competitive benefits do you see in a company’s use of extranets?

Q3:

Explain how Internet technologies are involved in developing a process in one of the functions of the business? Give an example and evaluate its business value.

Q4:

What are the basic differences between HRM, Intranet and Internet in terms of Domain and Network Communication Scope?

	HRM Intranet	HRM Internet
Domain
Network Communication Scope

Answer 1

ANSWER:1. Data Modeling:- Data Modeling is the first step in database designing.It is the representation of data model, or collected data. Also shows that collected data stored in database and linked with each data such as entities,objects and relationship between these data entities.Data modeling is the most important and initial step in creating data models it also referd to as a conceptual model.Data modeling is the process of creating data model and desiging database which are used to stor the related data in the form of row and columns in tables.

Conceptual data model vs Physical data model:-

CONCEPTUAL DATA MODEL:-

1. Conceptual data model is stratigy based data model it expalins the whole system.

2. Conceptual data model holds the summaries details of database such as number of entity,attributes and relaionship between them.

3. It includes the high-level data model record such as definations of all entities and working activity of whole data model.

4. It addresses digital and non-digital concepts of database model. development and desiging is initial for the system database.

Physical data model:-

1. Physical data model is the representation of internal structure of the data base model such as it shows the structure of tables and data records in the tables.

2. It also describes the data requirements of the system.

3. It shows the other database which are linked with one another to share some entities and IDs.

4. It includes the physical objects in physical data model such as primary key,foreign key , view and storage procedures etc.

CONTRAST:-

Physical data model:- Physical data model is the actual representation of database such as it shows the data stored in the tables in form of rows and columns.

Example:- Table student holds student_name, Rollno and Class_name etc.

Conceptual data model:- Conceptual model defines the data records such as entities, attributs and relationship between these entities.

Example:- Entity Bool have Attributes such as author name adition etc and relationship between book and author of book.

ANSWER 2:-

EXTRANET:-  Extranet is a private network to share the informatgion and data in a secure way . It is more secure then using internet. Extranet is used as private network only the authorized users and employees can access the services to share information over internet in extranet

Benefits:-

• It provides flexibilty to cusomers and employees of business by providing the access to them they can access whenever they want from anywhere.
• It provides security to the information that are to be share on the internet accuratly and on the right time.g
• Extranet is a private network and organization have control over all services so editing , adding and modification can be easily done.
• It increased prductivity by monitoring activities and triggers all actions of business, so the specific information cannot be lost and modofied.
• Provides easiest and secure way to get interacts with company's employees and clients.
• Speed of shareing data.

ANSWER:3

In the every business first needs to decides what kinds of activity and work should be done in business to start a new business there are so many things whch are to be done such as requirements to build business, data collections, compitatives business and design . thses are some specifics which are to be done before desiging an d developing a business . the process of doing homework before establish a business called as stratigy of business.Internet technolgies plays an vital role in business establishment and planning stratigy.

Internet technology is the main function in the business:- Internet technologies are involevd in the business to research, design ,review and to know comptitative business.

-> Internet is required by the business to research and to collect the data and information related to business demands and also the cutomers needs. Internet is an eaisy and fast way to to get access the knowldge about the business demands in market.

-> To reseach about the clients need and to get their queries internet tachnology is the easiest wAY.

-> every business needs a data model and design for the business model internet can help to make effective design for the business to manitain all the activity of business.

-> Business Testing can be easily done by internet.

-> To review and get feedback from the cutomers and users internet is the best way to review business.

Example:- when a business is establish , to establish business initially requirement phase get placed then research and design of business, we can get multiple design on internet and also can research about the requirements or demands in market . after establishment of business implementation phase begins in this customers use services of business and geive feedbacks online which are the facts and faults needs to improve in exsited business.

ANSWER:4

Internet:- Internet is a global wide area network which establish the connection between the computers over the internet. internet is udes to provides the online services to share information over internet and communication from one computer to another computer in wide area . it is fastest way of sharing data and nformation from miles away in fe seconds. computers are inter-related with each other over network through internet.

Services provided by internet such as E-mail, communication,web services etc.

Intranet:- Intranet is a computer network that is used inside an organization to share data and information from one computer to another computer such as when oganisation needs to sends the e-mail to each employees of the organization then intranet used to send email inside the organization only. it is different from internet only in terms of area such as internet can share information widely but intranet only shares informations and data inside the single organization.

HRM:- HRM stands for"Human Resource Management" is the main approache in business to manage the employees of company and activities which are performed in the business organisation. the effective management provides benefits to the business such as good management of peoples AND THEIR DAILY ACTIVITIES, CONTROLLING AND MONITORING OF BUsiness activities, montoring the compitative businesses.It hepls in improving the whole performance of business and get effective knowldge to the employees og the organization.so that HRM (Human Resource Management) plays an important role in business to future plans of an organisation to gain their benefits.

Network Communication Scope:

Network communication scope refers to the fields of network communication on network via internet. it describes the size and distance beween the computers and communication devices, how much distance coverage of the network across the world it also includes the speed of network how much time it will take to transfer or shares the data files and communication. such as total time taken between sending and recieving the data and message.

It includes three scopes such as :

• Distance between the communication devices on the network via internet.
• Speed of internet on the network.
• Time takes during sending and recieving data from one computer to another computer on the network.