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| Section | Weight | Objectives |
|---|---|---|
| Data Dictionary and Time Zones | 5% | - INTERVAL data types - Using data dictionary views - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP |
| Relational Database Concepts | 5% | - SQL SELECT clauses and ERD components - Relationship between database and SQL - Relational database theoretical and physical aspects |
| Using Subqueries | 5% | - Correlated subqueries for update and delete - Single-row and multi-row subqueries |
| Managing Tables with DML | 5% | - Transaction management and control - Multi-table INSERT and MERGE statements - INSERT, UPDATE, DELETE operations |
| DDL for Tables and Relationships | 15% | - Temporary and external tables - Constraints management - TRUNCATE TABLE statement - Views management - Table structure, columns, data types - Drop columns, set unused columns - CREATE TABLE statement |
| Displaying Data from Multiple Tables | 10% | - Different types of joins: equijoin, non-equijoin, outer join, self-join - Cartesian products |
| Controlling User Access | 5% | - Roles creation and privilege assignment - Granting privileges on tables - System vs object privileges |
| Managing Indexes, Synonyms, Sequences | 5% | - Create and manage indexes - Create and manage synonyms - Create and manage sequences |
| Using Functions | 25% | - ROUND, TRUNC, MOD functions - Restricting group results - Data type conversion: implicit and explicit - Date arithmetic and date functions - NVL, NULLIF, COALESCE functions - Character functions for string manipulation - Group functions and grouping data - Nested functions - TO_CHAR, TO_NUMBER, TO_DATE conversion functions |
| Using SET Operators | 5% | - UNION, UNION ALL, INTERSECT, MINUS operators - Using ORDER BY with set operations - Matching SELECT statements |
| Retrieving and Sorting Data | 15% | - Limiting rows and substitution variables - Operators, literals, DISTINCT keyword - Sorting query results - DEFINE and VERIFY commands - Arithmetic expressions and NULL values - Operator precedence rules - Using SELECT statement and column aliases |
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NEW QUESTION # 40
Which SQL function calculates the number of months between two dates?
Response:
Answer: A
NEW QUESTION # 41
How is the LOCALTIMESTAMP function different from CURRENT_TIMESTAMP?
Answer: C
NEW QUESTION # 42
Which type of join retrieves only the rows with matching values in both tables?
Answer: B
NEW QUESTION # 43
What is a role in Oracle Database?
Answer: D
NEW QUESTION # 44
What is the purpose of the DBA_OBJECTS data dictionary view?
Answer: C
NEW QUESTION # 45
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