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Oracle 1Z1-171 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Displaying Data from Multiple Tables | 10% | - Different types of joins: equijoin, non-equijoin, outer join, self-join - Cartesian products |
| Using Subqueries | 5% | - Correlated subqueries for update and delete - Single-row and multi-row subqueries |
| Retrieving and Sorting Data | 15% | - Using SELECT statement and column aliases - Sorting query results - Operators, literals, DISTINCT keyword - Arithmetic expressions and NULL values - Operator precedence rules - Limiting rows and substitution variables - DEFINE and VERIFY commands |
| Using Functions | 25% | - Character functions for string manipulation - Group functions and grouping data - Restricting group results - ROUND, TRUNC, MOD functions - Nested functions - NVL, NULLIF, COALESCE functions - Data type conversion: implicit and explicit - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - Date arithmetic and date functions |
| 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% | - Using data dictionary views - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP - INTERVAL data types |
| Managing Tables with DML | 5% | - Multi-table INSERT and MERGE statements - Transaction management and control - INSERT, UPDATE, DELETE operations |
| Managing Indexes, Synonyms, Sequences | 5% | - Create and manage indexes - Create and manage synonyms - Create and manage sequences |
| DDL for Tables and Relationships | 15% | - CREATE TABLE statement - Table structure, columns, data types - TRUNCATE TABLE statement - Constraints management - Temporary and external tables - Views management - Drop columns, set unused columns |
| Controlling User Access | 5% | - Granting privileges on tables - Roles creation and privilege assignment - System vs object privileges |
| Relational Database Concepts | 5% | - Relationship between database and SQL - Relational database theoretical and physical aspects - SQL SELECT clauses and ERD components |
Oracle Database 23ai SQL Associate Sample Questions:
1. Which of the following ensures that a relational database enforces data integrity?
A) Indexes on all columns
B) Hierarchical data organization
C) Constraints such as primary keys, foreign keys, and unique constraints
D) Redundant data storage
2. What is a SELF JOIN in SQL?
A) A join between tables with identical structures
B) A join of a table with itself
C) A join that does not require a WHERE clause
D) A join used for Cartesian products
3. 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
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) Returns rows that are present in both queries
D) Combines all rows from two queries without any conditions
5. What does a Cartesian product in SQL result from?
A) An OUTER JOIN with NULL values
B) A NATURAL JOIN without specifying join conditions
C) An INNER JOIN without specifying join conditions
Solutions:
| Question # 1 Answer: C | Question # 2 Answer: B | Question # 3 Answer: C | Question # 4 Answer: C | Question # 5 Answer: C |
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