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| Section | Weight | Objectives |
|---|---|---|
| Relational Database Concepts | 5% | - Relationship between database and SQL - Relational database theoretical and physical aspects - SQL SELECT clauses and ERD components |
| Managing Indexes, Synonyms, Sequences | 5% | - Create and manage sequences - Create and manage synonyms - Create and manage indexes |
| DDL for Tables and Relationships | 15% | - Views management - Temporary and external tables - Constraints management - TRUNCATE TABLE statement - Table structure, columns, data types - CREATE TABLE statement - Drop columns, set unused columns |
| Retrieving and Sorting Data | 15% | - Limiting rows and substitution variables - Operators, literals, DISTINCT keyword - Sorting query results - DEFINE and VERIFY commands - Using SELECT statement and column aliases - Operator precedence rules - Arithmetic expressions and NULL values |
| Using SET Operators | 5% | - Using ORDER BY with set operations - UNION, UNION ALL, INTERSECT, MINUS operators - Matching SELECT statements |
| Data Dictionary and Time Zones | 5% | - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP - Using data dictionary views - INTERVAL data types |
| Displaying Data from Multiple Tables | 10% | - Cartesian products - Different types of joins: equijoin, non-equijoin, outer join, self-join |
| Using Functions | 25% | - Group functions and grouping data - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - NVL, NULLIF, COALESCE functions - Character functions for string manipulation - ROUND, TRUNC, MOD functions - Data type conversion: implicit and explicit - Restricting group results - Date arithmetic and date functions - Nested functions |
| Controlling User Access | 5% | - System vs object privileges - Roles creation and privilege assignment - Granting privileges on tables |
| Using Subqueries | 5% | - Correlated subqueries for update and delete - Single-row and multi-row subqueries |
| 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 # 49
The column data type is converted to a primary key.
Answer: D
NEW QUESTION # 50
What is a role in Oracle Database?
Answer: D
NEW QUESTION # 51
What is a SELF JOIN in SQL?
Answer: A
NEW QUESTION # 52
What is the purpose of using external tables in Oracle Database?
Answer: C
NEW QUESTION # 53
What does the following SQL query do?
SELECT * FROM employees WHERE salary > 5000 ORDER BY department_id;
Answer: B
NEW QUESTION # 54
......
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