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| Section | Weight | Objectives |
|---|---|---|
| Managing Indexes, Synonyms, Sequences | 5% | - Create and manage indexes - Create and manage synonyms - Create and manage sequences |
| Using Functions | 25% | - Data type conversion: implicit and explicit - Date arithmetic and date functions - Character functions for string manipulation - Group functions and grouping data - Restricting group results - Nested functions - NVL, NULLIF, COALESCE functions - ROUND, TRUNC, MOD functions - TO_CHAR, TO_NUMBER, TO_DATE conversion functions |
| DDL for Tables and Relationships | 15% | - Drop columns, set unused columns - TRUNCATE TABLE statement - Temporary and external tables - Table structure, columns, data types - CREATE TABLE statement - Constraints management - Views management |
| 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% | - INTERVAL data types - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP - Using data dictionary views |
| Retrieving and Sorting Data | 15% | - Arithmetic expressions and NULL values - Using SELECT statement and column aliases - Operators, literals, DISTINCT keyword - Limiting rows and substitution variables - Sorting query results - DEFINE and VERIFY commands - Operator precedence rules |
| Relational Database Concepts | 5% | - SQL SELECT clauses and ERD components - Relational database theoretical and physical aspects - Relationship between database and SQL |
| Using Subqueries | 5% | - Single-row and multi-row subqueries - Correlated subqueries for update and delete |
| Controlling User Access | 5% | - Roles creation and privilege assignment - Granting privileges on tables - System vs object privileges |
| Displaying Data from Multiple Tables | 10% | - Different types of joins: equijoin, non-equijoin, outer join, self-join - Cartesian products |
| Managing Tables with DML | 5% | - INSERT, UPDATE, DELETE operations - Multi-table INSERT and MERGE statements - Transaction management and control |
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NEW QUESTION # 27
Which type of subquery returns exactly one value?
Answer: B
NEW QUESTION # 28
Which of the following can be achieved using a correlated subquery?
Answer: C
NEW QUESTION # 29
Which type of INSERT statement allows inserting rows into multiple tables using a single SELECT query?
Answer: C
NEW QUESTION # 30
What will the following SQL query do?
UPDATE employees
SET salary = salary * 1.1
WHERE department_id = 10;
Answer: D
NEW QUESTION # 31
Which data dictionary view provides information about all tables accessible to the current user?
Answer: D
NEW QUESTION # 32
......
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