Answered step by step
Verified Expert Solution
Question
1 Approved Answer
? 1. SQL provides the AS keyword, which can be used to assign meaningful column names to the results of queries using the SQL built-in
? 1. SQL provides the AS keyword, which can be used to assign meaningful column names to the results of queries using the SQL built-in functions. 2. For a relation schema R (A, B, C, D), if AB -> C and C -> D, then AB is a key. 3. The minimum select statement consists of 3 clauses. 4. In a nested query, the execution starts from the outer query then into the inner ones. 5. Aliases can be specified in query using the keyword As in the select clause or in the from clause. 6. If A->B is a hidden functional dependency then B is a portion of the primary key. 7. A good practice of the DB design process is to normalize relations before the ER designing. 8. The SQL UPDATE operation changes the table structure while leaving the data intact. 9. Having is used to place a constraint on aggregated properties. 10.In the GROUP BY clause, we can put only one attribute
Step by Step Solution
There are 3 Steps involved in it
Step: 1
Get Instant Access to Expert-Tailored Solutions
See step-by-step solutions with expert insights and AI powered tools for academic success
Step: 2
Step: 3
Ace Your Homework with AI
Get the answers you need in no time with our AI-driven, step-by-step assistance
Get Started