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Oracle 1Z1-171 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Using Subqueries | 5% | - Correlated subqueries for update and delete - Single-row and multi-row subqueries |
| Displaying Data from Multiple Tables | 10% | - Different types of joins: equijoin, non-equijoin, outer join, self-join - Cartesian products |
| Managing Tables with DML | 5% | - Multi-table INSERT and MERGE statements - INSERT, UPDATE, DELETE operations - Transaction management and control |
| Using Functions | 25% | - Restricting group results - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - Data type conversion: implicit and explicit - Group functions and grouping data - ROUND, TRUNC, MOD functions - NVL, NULLIF, COALESCE functions - Date arithmetic and date functions - Character functions for string manipulation - Nested functions |
| Retrieving and Sorting Data | 15% | - Operators, literals, DISTINCT keyword - Sorting query results - Limiting rows and substitution variables - Using SELECT statement and column aliases - Arithmetic expressions and NULL values - Operator precedence rules - DEFINE and VERIFY commands |
| Using SET Operators | 5% | - Matching SELECT statements - Using ORDER BY with set operations - UNION, UNION ALL, INTERSECT, MINUS operators |
| DDL for Tables and Relationships | 15% | - Constraints management - Drop columns, set unused columns - Views management - TRUNCATE TABLE statement - Table structure, columns, data types - CREATE TABLE statement - Temporary and external tables |
| Managing Indexes, Synonyms, Sequences | 5% | - Create and manage indexes - Create and manage sequences - Create and manage synonyms |
| Relational Database Concepts | 5% | - Relationship between database and SQL - SQL SELECT clauses and ERD components - Relational database theoretical and physical aspects |
| Data Dictionary and Time Zones | 5% | - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP - Using data dictionary views - INTERVAL data types |
| Controlling User Access | 5% | - Granting privileges on tables - Roles creation and privilege assignment - System vs object privileges |
Oracle Database 23ai SQL Associate Sample Questions:
1. Which SQL clause is used to specify the source table in a query?
A) FROM
B) SELECT
C) WHERE
D) GROUP BY
2. Which SQL keyword is used to remove duplicate rows from the result set of a query?
A) DISTINCTROW
B) UNIQUE
C) DISTINCT
D) ONLY
3. Which statement can be used to undo changes made in a transaction?
A) ROLLBACK
B) SAVEPOINT
C) COMMIT
D) MERGE
4. Which component of an ERD (Entity-Relationship Diagram) represents the attributes of an entity?
A) Ovals
B) Rectangles
C) Diamonds
D) Arrows
5. What is the primary purpose of an index in SQL?
A) To ensure uniqueness of values in a column
B) To improve the performance of data retrieval queries
C) To store metadata about a table
D) To enforce data integrity constraints
Solutions:
| Question # 1 Answer: A | Question # 2 Answer: C | Question # 3 Answer: A | Question # 4 Answer: A | Question # 5 Answer: B |
