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Oracle 1Z1-171 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Retrieving and Sorting Data | 15% | - Operators, literals, DISTINCT keyword - DEFINE and VERIFY commands - Operator precedence rules - Using SELECT statement and column aliases - Limiting rows and substitution variables - Arithmetic expressions and NULL values - Sorting query results |
| Relational Database Concepts | 5% | - Relationship between database and SQL - Relational database theoretical and physical aspects - SQL SELECT clauses and ERD components |
| Displaying Data from Multiple Tables | 10% | - Different types of joins: equijoin, non-equijoin, outer join, self-join - Cartesian products |
| Managing Tables with DML | 5% | - Transaction management and control - Multi-table INSERT and MERGE statements - INSERT, UPDATE, DELETE operations |
| Using Functions | 25% | - Data type conversion: implicit and explicit - Group functions and grouping data - ROUND, TRUNC, MOD functions - Nested functions - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - NVL, NULLIF, COALESCE functions - Date arithmetic and date functions - Character functions for string manipulation - Restricting group results |
| DDL for Tables and Relationships | 15% | - Table structure, columns, data types - Temporary and external tables - Views management - TRUNCATE TABLE statement - Constraints management - CREATE TABLE statement - Drop columns, set unused columns |
| Using Subqueries | 5% | - Correlated subqueries for update and delete - Single-row and multi-row subqueries |
| Managing Indexes, Synonyms, Sequences | 5% | - Create and manage synonyms - Create and manage indexes - Create and manage sequences |
| Using SET Operators | 5% | - Using ORDER BY with set operations - UNION, UNION ALL, INTERSECT, MINUS operators - Matching SELECT statements |
| Data Dictionary and Time Zones | 5% | - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP - INTERVAL data types - Using data dictionary views |
| 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 Oracle SQL function returns the current date and time, including time zone information?
A) CURRENT_TIMESTAMP
B) CURRENT_DATE
C) SYSDATE
D) NOW
2. 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) Returns rows that are present in both queries
D) Combines all rows from two queries without any conditions
3. Which SQL clause can be used in Oracle to limit the number of rows returned?
A) WHERE
B) FETCH FIRST n ROWS ONLY
C) GROUP BY
D) DISTINCT
4. Which command creates a new role in Oracle Database?
A) CREATE ROLE role_name;
B) ADD ROLE role_name;
C) CREATE NEW ROLE role_name;
5. Which command would drop an index from a table?
A) DROP INDEX
B) REMOVE INDEX
C) DELETE INDEX
D) TRUNCATE INDEX
Solutions:
| Question # 1 Answer: A | Question # 2 Answer: C | Question # 3 Answer: B | Question # 4 Answer: A | Question # 5 Answer: A |
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