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| Section | Weight | Objectives |
|---|---|---|
| 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 - Limiting rows and substitution variables - Operator precedence rules - DEFINE and VERIFY commands - Arithmetic expressions and NULL values |
| Managing Tables with DML | 5% | - Multi-table INSERT and MERGE statements - Transaction management and control - INSERT, UPDATE, DELETE operations |
| Controlling User Access | 5% | - System vs object privileges - Granting privileges on tables - Roles creation and privilege assignment |
| Using Functions | 25% | - Restricting group results - Date arithmetic and date functions - Character functions for string manipulation - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - Nested functions - Group functions and grouping data - Data type conversion: implicit and explicit - NVL, NULLIF, COALESCE functions - ROUND, TRUNC, MOD functions |
| DDL for Tables and Relationships | 15% | - Constraints management - Views management - CREATE TABLE statement - TRUNCATE TABLE statement - Table structure, columns, data types - Drop columns, set unused columns - Temporary and external tables |
| Managing Indexes, Synonyms, Sequences | 5% | - Create and manage synonyms - Create and manage indexes - Create and manage sequences |
| Displaying Data from Multiple Tables | 10% | - Different types of joins: equijoin, non-equijoin, outer join, self-join - Cartesian products |
| Using SET Operators | 5% | - Matching SELECT statements - UNION, UNION ALL, INTERSECT, MINUS operators - Using ORDER BY with set operations |
| Relational Database Concepts | 5% | - Relationship between database and SQL - Relational database theoretical and physical aspects - SQL SELECT clauses and ERD components |
| Data Dictionary and Time Zones | 5% | - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP - Using data dictionary views - INTERVAL data types |
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NEW QUESTION # 46
Which type of INSERT statement allows inserting rows into multiple tables using a single SELECT query?
Answer: D
NEW QUESTION # 47
What does the following query return?
SELECT ROUND(123.456, 1) AS rounded_value FROM dual;
Answer: B
NEW QUESTION # 48
What does the INTERSECT operator do in SQL?
Answer: D
NEW QUESTION # 49
Which of the following is an example of an object privilege?
Answer: C
NEW QUESTION # 50
What is a sequence in Oracle Database?
Answer: C
NEW QUESTION # 51
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