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Oracle 1Z1-171 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Using DML Statements | - Delete rows from a table - Control transactions - Insert rows into a table - Update rows in a table - Use the MERGE statement |
| Using DDL Statements | - Create and manage sequences - Create and manage views - Create and manage indexes - Create and manage tables - Create and manage constraints |
| Using Joins | - Use equijoins and non-equijoins - Use cross joins - Use self-joins - Use outer joins (LEFT, RIGHT, FULL) |
| Using SELECT Statements | - Execute a basic SELECT statement - Use the ORDER BY clause to sort rows - Use the WHERE clause to restrict rows - Use the FETCH clause to limit rows returned |
| Controlling User Access | - Grant and revoke privileges - Differentiate system privileges from object privileges - Create and manage roles |
| Using SQL Functions | - Use conversion functions - Use character, number, and date functions in SELECT statements |
| Using Subqueries | - Use multiple-row subqueries - Use single-row subqueries - Use correlated subqueries |
| Using Set Operators | - Use UNION, UNION ALL, INTERSECT, and MINUS operators |
Oracle Database 23ai SQL Associate Sample Questions:
Which of the following is true about foreign key constraints in SQL?
- A. They ensure that a column only contains NULL values.
- B. They define a relationship between two tables.
- C. They enforce the uniqueness of values in a column.
Correct Answer: B 🗳️
Which Oracle SQL function returns the current date and time, including time zone information?
- A. CURRENT_TIMESTAMP
- B. SYSDATE
- C. NOW
- D. CURRENT_DATE
Correct Answer: A 🗳️
What is required for the queries combined by a SET operator to work correctly?
- A. Both queries must use the GROUP BY clause.
- B. The tables must be joined using a primary key.
- C. The result sets must have the same number of columns and compatible data types.
- D. Both queries must include the WHERE clause.
Correct Answer: C 🗳️
What does a Cartesian product in SQL result from?
- A. An INNER JOIN without specifying join conditions
- B. A NATURAL JOIN without specifying join conditions
- C. An OUTER JOIN with NULL values
Correct Answer: A 🗳️
Which data dictionary view provides information about all the columns in tables accessible to the current user?
- A. ALL_TAB_COLUMNS
- B. ALL of the above
- C. USER_COLUMNS
- D. DBA_TAB_COLUMNS
Correct Answer: B 🗳️
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