Database Languages

DATABASE
Database languages
In this chapter we will discuss:
1. Database languages
2. Fourth-Generation Languages (4GLs)
3. Introduction to SQL
4. History of SQL
5. Writing SQL Commands
6. XQuery
7. SQL/XML
8. Literals
9. The Data Definition Language (DDL)
10.DDL Commands
11.DDL MySQL syntax
12.DML (Data Manipulation Language)
13.DML Commands
14.MySQL syntax
15.DCL (Data Control Language)
16.DCL Commands
17.MySQL syntax
18.TCL (Transaction Control Language)
19.TCL commands
20.System catalog
21.conclusion


Data base languages:
o A DBMS has appropriate languages and interfaces to express database
queries and updates.
o Database languages can be used to read, store and update the data in the
database.
Database languages are used to perform a variety of critical tasks that help a
database management system function correctly. These tasks can be certain

, operations such as read, update, insert, search, or delete the data stored in the
database.




Fourth-Generation Languages (4GLs)
• Non-procedural languages
• A user defines what is to be done, not how
• Examples:
– SQL
– QBE
– Forms Generators