Which of the following is TRUE? SELECT is the SQL equivalent of Projection (Pi) in Relational...
Which of the following is TRUE?
SELECT is the SQL equivalent of Projection (Pi) in Relational Algebra
Transactions and ACID compliance are only beneficial when there are multiple concurrent users of a database
A data warehouse star schema is always in third normal form
Use of a search index can only reduce cost of an SQL query when there is a ‘where’ clause as part of this query.
Homework Answers
Answer)
The following statement is True regarding the databases:
SELECT is the SQL equivalent of Projection (Pi) in Relational
Algebra
Projection or pi operator is the one which is same as the SELECT in SQL. The data warehouse schema can be in 3NF or un-normalized, and ACI can be implemented and useful even without concurrent users.
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Which of the following is TRUE?
SELECT is the SQL equivalent of Projection (Pi) in Relational...
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