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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Relational Database Concepts | 5% | - SQL SELECT clauses and ERD components - Relationship between database and SQL - Relational database theoretical and physical aspects |
| Topic 2: Using Subqueries | 5% | - Single-row and multi-row subqueries - Correlated subqueries for update and delete |
| Topic 3: Using SET Operators | 5% | - Using ORDER BY with set operations - UNION, UNION ALL, INTERSECT, MINUS operators - Matching SELECT statements |
| Topic 4: Retrieving and Sorting Data | 15% | - Operators, literals, DISTINCT keyword - Sorting query results - Using SELECT statement and column aliases - DEFINE and VERIFY commands - Arithmetic expressions and NULL values - Limiting rows and substitution variables - Operator precedence rules |
| Topic 5: Using Functions | 25% | - Nested functions - ROUND, TRUNC, MOD functions - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - NVL, NULLIF, COALESCE functions - Restricting group results - Date arithmetic and date functions - Character functions for string manipulation - Group functions and grouping data - Data type conversion: implicit and explicit |
| Topic 6: Displaying Data from Multiple Tables | 10% | - Different types of joins: equijoin, non-equijoin, outer join, self-join - Cartesian products |
| Topic 7: Managing Tables with DML | 5% | - Transaction management and control - Multi-table INSERT and MERGE statements - INSERT, UPDATE, DELETE operations |
| Topic 8: Managing Indexes, Synonyms, Sequences | 5% | - Create and manage synonyms - Create and manage sequences - Create and manage indexes |
| Topic 9: Data Dictionary and Time Zones | 5% | - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP - Using data dictionary views - INTERVAL data types |
| Topic 10: DDL for Tables and Relationships | 15% | - Drop columns, set unused columns - Constraints management - CREATE TABLE statement - Temporary and external tables - Views management - Table structure, columns, data types - TRUNCATE TABLE statement |
| Topic 11: Controlling User Access | 5% | - Roles creation and privilege assignment - Granting privileges on tables - System vs object privileges |
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NEW QUESTION # 39
Which data dictionary view lists all indexes created by the current user?
Answer: D
NEW QUESTION # 40
Which clause is used to ensure that only specific rows are deleted in a DELETE statement?
Answer: A
NEW QUESTION # 41
What does the NEXTVAL pseudocolumn do in SQL?
Answer: D
NEW QUESTION # 42
Which function is used to extract the year from a date in SQL?
Answer: B
NEW QUESTION # 43
Which SQL statement is used to insert a new row into a table?
Answer: B
NEW QUESTION # 44
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