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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Managing Tables with DML | 5% | - Multi-table INSERT and MERGE statements - Transaction management and control - INSERT, UPDATE, DELETE operations |
| Topic 2: Using Subqueries | 5% | - Correlated subqueries for update and delete - Single-row and multi-row subqueries |
| Topic 3: Displaying Data from Multiple Tables | 10% | - Different types of joins: equijoin, non-equijoin, outer join, self-join - Cartesian products |
| Topic 4: DDL for Tables and Relationships | 15% | - Constraints management - Views management - Table structure, columns, data types - Drop columns, set unused columns - TRUNCATE TABLE statement - Temporary and external tables - CREATE TABLE statement |
| Topic 5: Relational Database Concepts | 5% | - Relationship between database and SQL - Relational database theoretical and physical aspects - SQL SELECT clauses and ERD components |
| Topic 6: Using SET Operators | 5% | - Matching SELECT statements - UNION, UNION ALL, INTERSECT, MINUS operators - Using ORDER BY with set operations |
| Topic 7: Data Dictionary and Time Zones | 5% | - INTERVAL data types - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP - Using data dictionary views |
| Topic 8: Retrieving and Sorting Data | 15% | - Operator precedence rules - Using SELECT statement and column aliases - Sorting query results - DEFINE and VERIFY commands - Limiting rows and substitution variables - Arithmetic expressions and NULL values - Operators, literals, DISTINCT keyword |
| Topic 9: Controlling User Access | 5% | - System vs object privileges - Granting privileges on tables - Roles creation and privilege assignment |
| Topic 10: Managing Indexes, Synonyms, Sequences | 5% | - Create and manage sequences - Create and manage synonyms - Create and manage indexes |
| Topic 11: Using Functions | 25% | - NVL, NULLIF, COALESCE functions - Data type conversion: implicit and explicit - Nested functions - ROUND, TRUNC, MOD functions - Character functions for string manipulation - Group functions and grouping data - Restricting group results - Date arithmetic and date functions - TO_CHAR, TO_NUMBER, TO_DATE conversion functions |
1. Which SQL keyword is used to define a substitution variable in a SQL statement?
A) DEFINE
B) SUBSTITUTION
C) SET
D) VAR
2. What is required for the queries combined by a SET operator to work correctly?
A) Both queries must use the GROUP BY clause.
B) The result sets must have the same number of columns and compatible data types.
C) The tables must be joined using a primary key.
D) Both queries must include the WHERE clause.
3. Which data dictionary view provides information about all tables accessible to the current user?
A) SESSION_TABLES
B) ALL_TABLES
C) DBA_TABLES
D) USER_TABLES
4. The column data type is converted to a primary key.
A) CREATE SEQUENCE
B) CREATE INDEX
C) CREATE SYNONYM
D) CREATE ALIAS
5. Which clause in an UPDATE statement typically uses a subquery to assign values to columns?
A) SET
B) FROM
C) HAVING
D) WHERE
Solutions:
| Question # 1 Answer: A | Question # 2 Answer: B | Question # 3 Answer: B | Question # 4 Answer: C | Question # 5 Answer: A |
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