E-R-Model describe data and identifies relationship between them.E-R model is represented by E-R Diagram.E-R- model is explained along with their represented in E-R Diagram. Attribute : Properties or characteristic y possessed by an entity are called attributes. Relationship-: A Relationship is an association between entities. A relationship is represented as a diamond between two… Read More »
An entity relationship diagram is a graphical representation of an organization data storage requirements. Entity relationship diagram are abstraction of the real word which simplify the problem to be solved while retaining its essential feathers. E-R-model diagrams are used to .. Identify the data that must be captured stored and retrieved in order to support… Read More »
Data models-: These models are- a collection of conceptual tools for describing data, data relationship,data semantics and data constraints. in other words we can say that the Data models define how data is connected to each other and how they are processed and stored inside the system. Data Models are categorized into the following – 1.… Read More »
A database structure is divided in different components. The exact structure of a DBMS is depended upon the operating system on which it has to work because the operating system provide the basic services, which database system uses base for accomplishing it’s tasks. Database structure—- A database system are divided in two types… Query… Read More »
DBMS is always concerned with some rel world enterprise.Data store in DBMS describe real world entities and represent relationship between these entities. As like there are employees,departments and project in a company and data in the company database describe these entities. In terms of their attribute and relation ship to other entities. Data can be… Read More »
File system-:A file system is a process that manages data into the hard disk drive (HDD). Data are stored, accessed and managed. It is a logical disk component that manages a disk’s internal operations as it relates to a computer and is abstract to a human user. Without a file system, data stored information wouldn’t… Read More »
Introduction -: DBMS means database management system. DBMS is a specialized computer application to a central component of computing environment. DBMS play a vital role in organizing data about a particular enterprise. Example- A company store the data his employees (Employee name,number,address,salary etc.) Departments no, name location, project name,number etc. These are related to each… Read More »
How facebook video download online -: We know that the facebook is a social networking website that is providing many facility as like photo’s,videos publishing facility and many more. There are many video available if we want to download we can download these video in HD quality. Follow these process – First open a facebook… Read More »
Backlink Definition -: It also called the link building in seo strategies . Back link is the process as a hyperlink that providing a web address to a website. We can open website directly . In other words we can say that the backlink is any incoming link to a website or blog from any… Read More »
Definition of Android -: Android is a operating system. It is an open source and Linux-based operating system for mobiles devices such as smartphones and tablet computers. Android was developed by the Open Handset Alliance companies. Android is a software that providing the facility to creating a mobile application. by the help of this android… Read More »