Database Management System Question
Database Management System Question With Answer & Solution
Que. - What action does ⋈ operator perform in relational algebra
Que. - What does the “x” operator do in relational algebra?
Que. - An attribute is a __________ in a relation.
Que. - What is the method of specifying a primary key in a schema description?
Que. - Statement 1: A tuple is a row in a relation Statement 2: Existence of multiple foreign keys in a same relation is possible
Que. - Choose the option that correctly explains in words, the function of the following relational algebra expression σyear≥2009 (book ⋈ borrow)
Que. - State true or false: If a relation consists of a foreign key, then it is called a referenced relation of the foreign key dependency.
Que. - Which of the following information does an SQL DDL not specify?
Que. - Which of the following data types does the SQL standard not support?
Que. - Which command is used to create a new relation in SQL
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