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It is a repository where organizations keep their data. Every org maintains data about its business, its employees, and other relevant information. For example: A school maintains record for teachers, students etc.This data needs to be available whenever its required. It should be possible to retrieve any piece of I nformation at any time. This data needs to be updated on regular basis. For this we need to convert data into database. 5/12/2016 2
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It arranges information in such a way that any specific piece of information can be easily accessed. 5/12/2016 5
Types of DB Hierarchical Network Relational Object-oriented. 5/12/2016 6
Of these, the Relational DB is the most popular one. A relational DB stores data in the form of tables. A table organizes data in rows called Records and columns are called Fields. Records and Fields together make up the table. 5/12/2016 7
Fields Reco rds 5/12/2016 8
It involves creating, modifying, deleting, and adding data to a DB. The S/W that performs these functions are called DBMS. DBMS software: Ms Access, MySQL, Oracle. 5/12/2016 9
Reduces Data Redundancy. Controls data inconsistency. Facilitates sharing of data. Enforces standards. Ensures data security. Maintains Integrity. 5/12/
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