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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Controlling User Access | 5% | - Roles creation and privilege assignment - System vs object privileges - Granting privileges on tables |
| Topic 2: Using Functions | 25% | - Date arithmetic and date functions - Data type conversion: implicit and explicit - Group functions and grouping data - NVL, NULLIF, COALESCE functions - Nested functions - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - Restricting group results - ROUND, TRUNC, MOD functions - Character functions for string manipulation |
| Topic 3: DDL for Tables and Relationships | 15% | - Constraints management - Views management - Drop columns, set unused columns - Table structure, columns, data types - Temporary and external tables - TRUNCATE TABLE statement - CREATE TABLE statement |
| Topic 4: Using Subqueries | 5% | - Correlated subqueries for update and delete - Single-row and multi-row subqueries |
| Topic 5: Displaying Data from Multiple Tables | 10% | - Cartesian products - Different types of joins: equijoin, non-equijoin, outer join, self-join |
| Topic 6: Data Dictionary and Time Zones | 5% | - Using data dictionary views - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP - INTERVAL data types |
| Topic 7: Retrieving and Sorting Data | 15% | - Operator precedence rules - Using SELECT statement and column aliases - Sorting query results - Arithmetic expressions and NULL values - Limiting rows and substitution variables - Operators, literals, DISTINCT keyword - DEFINE and VERIFY commands |
| Topic 8: Managing Tables with DML | 5% | - Transaction management and control - INSERT, UPDATE, DELETE operations - Multi-table INSERT and MERGE statements |
| Topic 9: Managing Indexes, Synonyms, Sequences | 5% | - Create and manage indexes - Create and manage sequences - Create and manage synonyms |
| Topic 10: Relational Database Concepts | 5% | - Relationship between database and SQL - Relational database theoretical and physical aspects - SQL SELECT clauses and ERD components |
| Topic 11: Using SET Operators | 5% | - Using ORDER BY with set operations - Matching SELECT statements - UNION, UNION ALL, INTERSECT, MINUS operators |
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NEW QUESTION # 88
Which of the following best describes a relational database?
Answer: C
NEW QUESTION # 89
Which SQL clause can be used in Oracle to limit the number of rows returned?
Answer: A
NEW QUESTION # 90
Which SQL statement is used to insert a new row into a table?
Answer: A
NEW QUESTION # 91
Which INTERVAL data type would you use to store a period of time in years and months?
Answer: D
NEW QUESTION # 92
Which of the following data dictionary views provides information about constraints on tables?
Answer: D
NEW QUESTION # 93
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