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| Section | Objectives |
|---|---|
| Advanced SQL Features | - Aggregations and grouping
|
| Retrieving Data Using SQL | - SELECT statements
|
| Relational Database Concepts | - Database fundamentals and relational model
|
| Data Manipulation Language (DML) | - Insert, Update, Delete operations
|
| Data Definition Language (DDL) | - Schema objects
|
Question 1
What does a Cartesian product in SQL result from?
A. An OUTER JOIN with NULL values
B. An INNER JOIN without specifying join conditions
C. A NATURAL JOIN without specifying join conditions
Question 2
What happens if a DELETE statement is executed without a WHERE clause?
A. Only the first row is deleted.
B. No rows are deleted.
C. All rows in the table are deleted.
D. An error is raised.
Question 3
Which clause is used to allow a user to grant a privilege to others?
A. WITH GRANT OPTION
B. WITH ADMIN OPTION
C. WITH SHARE OPTION
D. WITH SELECT OPTION
Question 4
What does the INTERSECT operator do in SQL?
A. Returns rows from the first query that are not present in the second query
B. Combines rows from two queries and includes all duplicates
C. Combines all rows from two queries without any conditions
D. Returns rows that are present in both queries
Question 5
Which data dictionary view lists all indexes created by the current user?
A. USER_INDEXES
B. ALL_INDEXES
C. INDEX_LIST
D. DBA_INDEXES
Solutions:
| Question 1 Answer: B | Question 2 Answer: C | Question 3 Answer: A | Question 4 Answer: D | Question 5 Answer: A |
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