Database management system class 12

  • Database concepts

    A relational database management system (RDBMS) is a collection of programs and capabilities that enable IT teams and others to create, update, administer and otherwise interact with a relational database..

  • Types of DBMS

    A Database is a collection of DATA/INFORMATION that is organized so that it can be easily accessed, managed and updated.
    In Database ,Data is organized into rows, columns and tables, and it is indexed to make it easier to find relevant information..

  • Types of DBMS

    A database model is a collection of logical constructs used to represent the data structure and the data relationships found within the database.
    Under the database model, it includes the Conceptual Model and Implementation Model..

Jul 20, 2023A database management system (DBMS) or database system in short, is a software that can be used to create and manage databases.
A database management system (DBMS) or database system in short, is a software that can be used to create and manage databases. DBMS lets users create a database, store, manage, update/modify and retrieve data from that database by users or application programs.

Mannual Record Keeping

In the manual record-keeping system the entries are done in the registers physically. Each and every record is entered by a person at the reception

Record-Keeping Using Software

Normally database allows to create, edit, delete and retrieve the necessary information as and when required

File System – Unit 3 Database Management Computer Science Class 12

The data stored in files can be accessed directly via a particular program. So every register can have separate files to store data

Application Areas of DBMS

Let us understand the various application areas of DBMS in this article Unit 3 Database Management Computer Science Class 12

File System to Database Management System

As we have seen different files can be created in the file system but they cannot be linked together

Data Models

Few popular data models are as follows: 1. Flat model:This may not strictly qualify as a data model. The flat (or table) model consists of a single

Relational Data Model

The most popular data model among the data models is the relational data model. Let’s discuss a few terms associated with the relational data model

Keys in A Relational Database

Keys in a relational database refer to the restrictions or constraints on the values of attributes and contents related to each other

Structured Query Language

1. DBMS offers a special kind of command language known as Struct… 2

How to use SQL for data query in DBMS class 12?

In this section of Unit 3 Database Management Computer Science Class 12, we are going to cover SQL for data queries

For data query, the select command is used

It has various forms

You can use select to fetch records from the relation

You can use the select command to fetch:


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