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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Managing Indexes, Synonyms, Sequences | 5% | - Create and manage sequences - Create and manage synonyms - Create and manage indexes |
| Topic 2: DDL for Tables and Relationships | 15% | - Temporary and external tables - CREATE TABLE statement - Drop columns, set unused columns - TRUNCATE TABLE statement - Constraints management - Views management - Table structure, columns, data types |
| Topic 3: Retrieving and Sorting Data | 15% | - DEFINE and VERIFY commands - Sorting query results - Limiting rows and substitution variables - Operators, literals, DISTINCT keyword - Operator precedence rules - Using SELECT statement and column aliases - Arithmetic expressions and NULL values |
| Topic 4: Data Dictionary and Time Zones | 5% | - Using data dictionary views - INTERVAL data types - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP |
| Topic 5: Using Subqueries | 5% | - Correlated subqueries for update and delete - Single-row and multi-row subqueries |
| Topic 6: Displaying Data from Multiple Tables | 10% | - Cartesian products - Different types of joins: equijoin, non-equijoin, outer join, self-join |
| Topic 7: Using SET Operators | 5% | - Using ORDER BY with set operations - UNION, UNION ALL, INTERSECT, MINUS operators - Matching SELECT statements |
| Topic 8: Controlling User Access | 5% | - Granting privileges on tables - System vs object privileges - Roles creation and privilege assignment |
| Topic 9: Managing Tables with DML | 5% | - INSERT, UPDATE, DELETE operations - Multi-table INSERT and MERGE statements - Transaction management and control |
| Topic 10: Relational Database Concepts | 5% | - SQL SELECT clauses and ERD components - Relational database theoretical and physical aspects - Relationship between database and SQL |
| Topic 11: Using Functions | 25% | - Restricting group results - Date arithmetic and date functions - ROUND, TRUNC, MOD functions - Nested functions - Data type conversion: implicit and explicit - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - Group functions and grouping data - Character functions for string manipulation - NVL, NULLIF, COALESCE functions |
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NEW QUESTION # 15
Which SQL clause is used to specify the source table in a query?
Answer: C
NEW QUESTION # 16
What is the output of the following query?
SELECT CURRENT_DATE FROM dual;
Answer: B
NEW QUESTION # 17
Which clause in a SQL SELECT statement is used to define the columns to be retrieved?
Answer: D
NEW QUESTION # 18
Which SQL statement is used to create a table?
Answer: D
NEW QUESTION # 19
Which clause in an UPDATE statement typically uses a subquery to assign values to columns?
Answer: D
NEW QUESTION # 20
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