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| Section | Weight | Objectives |
|---|---|---|
| Data Dictionary and Time Zones | 5% | - INTERVAL data types - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP - Using data dictionary views |
| Managing Indexes, Synonyms, Sequences | 5% | - Create and manage sequences - Create and manage synonyms - Create and manage indexes |
| DDL for Tables and Relationships | 15% | - Constraints management - Views management - Table structure, columns, data types - TRUNCATE TABLE statement - Temporary and external tables - CREATE TABLE statement - Drop columns, set unused columns |
| Using Subqueries | 5% | - Single-row and multi-row subqueries - Correlated subqueries for update and delete |
| Using Functions | 25% | - NVL, NULLIF, COALESCE functions - ROUND, TRUNC, MOD functions - Group functions and grouping data - Restricting group results - Date arithmetic and date functions - Character functions for string manipulation - Data type conversion: implicit and explicit - Nested functions - TO_CHAR, TO_NUMBER, TO_DATE conversion functions |
| Relational Database Concepts | 5% | - Relationship between database and SQL - Relational database theoretical and physical aspects - SQL SELECT clauses and ERD components |
| Using SET Operators | 5% | - Using ORDER BY with set operations - Matching SELECT statements - UNION, UNION ALL, INTERSECT, MINUS operators |
| Retrieving and Sorting Data | 15% | - Operator precedence rules - Limiting rows and substitution variables - Arithmetic expressions and NULL values - Sorting query results - DEFINE and VERIFY commands - Using SELECT statement and column aliases - Operators, literals, DISTINCT keyword |
| Managing Tables with DML | 5% | - INSERT, UPDATE, DELETE operations - Multi-table INSERT and MERGE statements - Transaction management and control |
| 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 |
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NEW QUESTION # 76
What is the primary purpose of granting privileges in Oracle Database?
Answer: A
NEW QUESTION # 77
What does a Cartesian product in SQL result from?
Answer: A
NEW QUESTION # 78
What happens when the maximum value of a sequence is reached?
Answer: C
NEW QUESTION # 79
What is the difference between UNION and UNION ALL?
Answer: A
NEW QUESTION # 80
Which SQL statement is used to insert a new row into a table?
Answer: C
NEW QUESTION # 81
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