Computer Science
…………… defines rules regarding the values allowed in columns and is the standard mechanism for enforcing database integrity.
- Column
- Constraint
- Index
- Trigger
Related Questions
In SQL, which command(s) is(are) used to change a table's structure / characteristics ?
- ALTER TABLE
- MODIFY TABLE
- CHANGE TABLE
- All of these
Which of the following commands will delete the table from MYSQL database ?
- DELETE TABLE
- DROP TABLE
- REMOVE TABLE
- ALTER TABLE
Fill in the blank :
…………… command is used to remove primary key from a table in SQL.
- update
- remove
- alter
- drop
Which command defines its columns, integrity constraint in create table :
- Create table command
- Drop table command
- Alter table command
- All of these