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Oracle 1Z1-171 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Using Subqueries | 5% | - Correlated subqueries for update and delete - Single-row and multi-row subqueries |
| Topic 2: Managing Indexes, Synonyms, Sequences | 5% | - Create and manage synonyms - Create and manage sequences - Create and manage indexes |
| Topic 3: Controlling User Access | 5% | - System vs object privileges - Roles creation and privilege assignment - Granting privileges on tables |
| Topic 4: Using Functions | 25% | - Restricting group results - Group functions and grouping data - NVL, NULLIF, COALESCE functions - Nested functions - Date arithmetic and date functions - Data type conversion: implicit and explicit - Character functions for string manipulation - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - ROUND, TRUNC, MOD functions |
| Topic 5: Retrieving and Sorting Data | 15% | - Using SELECT statement and column aliases - DEFINE and VERIFY commands - Operator precedence rules - Sorting query results - Operators, literals, DISTINCT keyword - Arithmetic expressions and NULL values - Limiting rows and substitution variables |
| Topic 6: Using SET Operators | 5% | - UNION, UNION ALL, INTERSECT, MINUS operators - Matching SELECT statements - Using ORDER BY with set operations |
| Topic 7: Managing Tables with DML | 5% | - Transaction management and control - INSERT, UPDATE, DELETE operations - Multi-table INSERT and MERGE statements |
| Topic 8: Displaying Data from Multiple Tables | 10% | - Cartesian products - Different types of joins: equijoin, non-equijoin, outer join, self-join |
| Topic 9: Relational Database Concepts | 5% | - Relationship between database and SQL - SQL SELECT clauses and ERD components - Relational database theoretical and physical aspects |
| Topic 10: Data Dictionary and Time Zones | 5% | - Using data dictionary views - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP - INTERVAL data types |
| Topic 11: DDL for Tables and Relationships | 15% | - Constraints management - TRUNCATE TABLE statement - Drop columns, set unused columns - Views management - Temporary and external tables - Table structure, columns, data types - CREATE TABLE statement |
Oracle Database 23ai SQL Associate Sample Questions:
1. Which function returns the current system date and time in the database session's time zone?
A) SYSDATE
B) LOCAL_TIME
C) SYSTEM_TIME
D) CURRENT_TIMESTAMP
2. How does SQL handle NULL values in arithmetic expressions?
A) Treats them as zero
B) Produces a NULL result
C) Produces an error
D) Treats them as the largest possible number
3. Which of the following statements is true about constraints in Oracle Database?
A) Constraints can only be added when creating a table.
B) Constraints are automatically dropped when rows are deleted.
C) Constraints cannot reference other tables.
D) Constraints can be added or modified using the ALTER TABLE statement.
4. Which of the following SQL commands retrieves data from a relational database?
A) SELECT
B) UPDATE
C) DELETE
D) INSERT
5. What happens when the maximum value of a sequence is reached?
A) The sequence starts decrementing values.
B) The sequence resets to the starting value if the CYCLE option is specified.
C) The sequence stops generating values.
D) An error is raised, and the sequence must be recreated.
Solutions:
| Question # 1 Answer: D | Question # 2 Answer: B | Question # 3 Answer: D | Question # 4 Answer: A | Question # 5 Answer: B |
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