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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Relational Database Concepts | 5% | - Relationship between database and SQL - Relational database theoretical and physical aspects - SQL SELECT clauses and ERD components |
| Topic 2: DDL for Tables and Relationships | 15% | - Temporary and external tables - TRUNCATE TABLE statement - Views management - CREATE TABLE statement - Table structure, columns, data types - Constraints management - Drop columns, set unused columns |
| Topic 3: Managing Tables with DML | 5% | - Multi-table INSERT and MERGE statements - INSERT, UPDATE, DELETE operations - Transaction management and control |
| Topic 4: Data Dictionary and Time Zones | 5% | - Using data dictionary views - INTERVAL data types - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP |
| Topic 5: Retrieving and Sorting Data | 15% | - Arithmetic expressions and NULL values - Limiting rows and substitution variables - Sorting query results - Operator precedence rules - Operators, literals, DISTINCT keyword - DEFINE and VERIFY commands - Using SELECT statement and column aliases |
| Topic 6: Controlling User Access | 5% | - Roles creation and privilege assignment - Granting privileges on tables - System vs object privileges |
| Topic 7: Using Subqueries | 5% | - Correlated subqueries for update and delete - Single-row and multi-row subqueries |
| Topic 8: Managing Indexes, Synonyms, Sequences | 5% | - Create and manage indexes - Create and manage synonyms - Create and manage sequences |
| Topic 9: Displaying Data from Multiple Tables | 10% | - Different types of joins: equijoin, non-equijoin, outer join, self-join - Cartesian products |
| Topic 10: Using Functions | 25% | - ROUND, TRUNC, MOD functions - Nested functions - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - Date arithmetic and date functions - Restricting group results - NVL, NULLIF, COALESCE functions - Data type conversion: implicit and explicit - Group functions and grouping data - Character functions for string manipulation |
| Topic 11: Using SET Operators | 5% | - Matching SELECT statements - UNION, UNION ALL, INTERSECT, MINUS operators - Using ORDER BY with set operations |
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NEW QUESTION # 32
Which of the following data dictionary views provides information about constraints on tables?
Answer: D
NEW QUESTION # 33
Which operator can be used in a multiple-row subquery to match a single value to a list of values?
Answer: C
NEW QUESTION # 34
Which type of subquery returns exactly one value?
Answer: A
NEW QUESTION # 35
Which command would drop an index from a table?
Answer: D
NEW QUESTION # 36
How is the LOCALTIMESTAMP function different from CURRENT_TIMESTAMP?
Answer: B
NEW QUESTION # 37
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