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What is DDL? Make a list of commands with short description used in DDL
Ans: Data Definition Language that is abbreviated as DDL is a computer language for defining data structures. The phrase was first introduced in relation to the Codasyl database model in which the schema of the database was written in a Data Definition Language explaining the records, fields, and "sets" making up the user Data Model.
List of DDL commands:
(a) To define a table/ relation
CREATE TABLE ------
(b) To eliminate table/relation definition
DROP TABLE ----
(iii) To alter the definition of an existing table
ALTER TABLE-------
Define the terms i) Key attribute ii) Value set Key attribute: An entity type usually has an attribute whose values are exact from each individual entity in the collection. Su
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Section A: Use the following tables to create a database called College. Use SQL commands. Student stuid(primary) lastName firstName
a brief definition
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