DELETE statement can delete tuples in a relation but can not remove the relation schema.
Question
DELETE statement
The DELETE
statement can delete tuples in a relation but can not remove the relation schema.
Solution
Yes, that's correct. The DELETE statement in SQL is used to delete existing records in a table (also known as tuples in a relation). However, it does not delete the table itself or its schema. Here's a step-by-step explanation:
-
The DELETE statement is used in SQL to remove one or more records from a table. The basic syntax is:
DELETE FROM table_name WHERE condition;
. If you do not specify a WHERE clause, all records will be deleted. -
When you execute a DELETE statement, the affected records are removed from the table, but the table structure, its columns, constraints, indexes, and so on (the schema) remain intact.
-
If you want to remove the entire table including its schema, you would use the DROP TABLE statement instead. The basic syntax is:
DROP TABLE table_name;
. -
So, in summary, the DELETE statement is used to remove data from a table, but it does not affect the table's schema. The table itself, along with its defined columns and constraints, remains in the database.
Similar Questions
Which command is used to remove a relation from an SQL?Answer areaDrop tableDeletePurgeRemove
Which of the following SQL clauses is used to DELETE tuples from a database table?DELETEREMOVEDROPCLEAR
There exists only one possible 3NF decomposition for any relation schema and any set of functional dependencies.Question 4Select one:TrueFalse
__________ is a specific domain in the relation which has entries of all tuples.
Three-schema architecture is part of the Entity-Relationship Data Model. True False
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.