1
MediumComputer ScienceDatabases2024Free
The relational algebra projection operation (pi) is used to:
Prepare
11 questions — filter by subject, topic & difficulty
The relational algebra projection operation (pi) is used to:
A schema in a relational database describes:
Get immediate access to verified answers, detailed AI explanations, and diagnostic test reports.
The relational algebra selection operation (sigma) is used to:
The relational algebra operation that combines two relations based on a common attribute is:
The degree of a relation in the relational model refers to its number of:
In an entity-relationship model, a diamond shape typically represents a(n):
A view in a relational database is:
In a relational database, a primary key is used to:
A foreign key in a relational database is used to:
In relational database design, what operational condition occurs if a user attempts to delete a row containing a Primary Key that is actively referenced by a Foreign Key column in a separate child table under standard 'Restricted Referential Integrity' rules?
In Database Management Systems (DBMS), the property of **'Atomicity'** within the standard ACID model ensures that:
All 11 questions loaded