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| Section | Weight | Objectives |
|---|---|---|
| Managing Tables with DML | 5% | - INSERT, UPDATE, DELETE operations - Multi-table INSERT and MERGE statements - Transaction management and control |
| DDL for Tables and Relationships | 15% | - Table structure, columns, data types - Temporary and external tables - Constraints management - CREATE TABLE statement - Views management - Drop columns, set unused columns - TRUNCATE TABLE statement |
| Controlling User Access | 5% | - System vs object privileges - Roles creation and privilege assignment - Granting privileges on tables |
| Using Subqueries | 5% | - Single-row and multi-row subqueries - Correlated subqueries for update and delete |
| Using SET Operators | 5% | - Matching SELECT statements - Using ORDER BY with set operations - UNION, UNION ALL, INTERSECT, MINUS operators |
| Data Dictionary and Time Zones | 5% | - Using data dictionary views - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP - INTERVAL data types |
| Managing Indexes, Synonyms, Sequences | 5% | - Create and manage indexes - Create and manage synonyms - Create and manage sequences |
| Displaying Data from Multiple Tables | 10% | - Cartesian products - Different types of joins: equijoin, non-equijoin, outer join, self-join |
| Using Functions | 25% | - Date arithmetic and date functions - Character functions for string manipulation - Nested functions - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - Group functions and grouping data - Restricting group results - ROUND, TRUNC, MOD functions - NVL, NULLIF, COALESCE functions - Data type conversion: implicit and explicit |
| Relational Database Concepts | 5% | - SQL SELECT clauses and ERD components - Relational database theoretical and physical aspects - Relationship between database and SQL |
| Retrieving and Sorting Data | 15% | - DEFINE and VERIFY commands - Sorting query results - Limiting rows and substitution variables - Operator precedence rules - Operators, literals, DISTINCT keyword - Arithmetic expressions and NULL values - Using SELECT statement and column aliases |
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NEW QUESTION # 37
What does the INTERSECT operator do in SQL?
Answer: A
NEW QUESTION # 38
What is a subquery in SQL?
Answer: D
NEW QUESTION # 39
Which of the following SET operators combines results from two queries and removes duplicates?
Answer: A
NEW QUESTION # 40
The column data type is converted to a primary key.
Answer: C
NEW QUESTION # 41
Which command revokes a user's privilege to update a table?
Answer: A
NEW QUESTION # 42
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