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| Section | Weight | Objectives |
|---|---|---|
| Managing Tables with DML | 5% | - Multi-table INSERT and MERGE statements - Transaction management and control - INSERT, UPDATE, DELETE operations |
| Retrieving and Sorting Data | 15% | - Operators, literals, DISTINCT keyword - Limiting rows and substitution variables - Arithmetic expressions and NULL values - Using SELECT statement and column aliases - Operator precedence rules - Sorting query results - DEFINE and VERIFY commands |
| Data Dictionary and Time Zones | 5% | - Using data dictionary views - INTERVAL data types - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP |
| Using SET Operators | 5% | - Matching SELECT statements - UNION, UNION ALL, INTERSECT, MINUS operators - Using ORDER BY with set operations |
| Relational Database Concepts | 5% | - Relational database theoretical and physical aspects - Relationship between database and SQL - SQL SELECT clauses and ERD components |
| Controlling User Access | 5% | - Granting privileges on tables - Roles creation and privilege assignment - System vs object privileges |
| Using Functions | 25% | - Data type conversion: implicit and explicit - Character functions for string manipulation - Restricting group results - Group functions and grouping data - Nested functions - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - ROUND, TRUNC, MOD functions - NVL, NULLIF, COALESCE functions - Date arithmetic and date functions |
| DDL for Tables and Relationships | 15% | - Table structure, columns, data types - Drop columns, set unused columns - CREATE TABLE statement - Constraints management - TRUNCATE TABLE statement - Views management - Temporary and external tables |
| Displaying Data from Multiple Tables | 10% | - Cartesian products - Different types of joins: equijoin, non-equijoin, outer join, self-join |
| Managing Indexes, Synonyms, Sequences | 5% | - Create and manage sequences - Create and manage synonyms - Create and manage indexes |
| Using Subqueries | 5% | - Correlated subqueries for update and delete - Single-row and multi-row subqueries |
1. Which clause can be used with SET operators to sort the final result set?
A) ORDER BY
B) GROUP BY
C) HAVING
D) WHERE
2. Which SQLPlus command displays defined substitution variable values?
A) VERIFY
B) SHOW
C) LIST
D) DEFINE
3. What happens when a temporary table is created in Oracle Database?
A) It is stored in external files.
B) It cannot have any constraints.
C) It is created for the duration of a user session or transaction.
D) It is permanently stored in the database.
4. Which type of join includes rows that do not have matching values in the joined table?
A) CROSS JOIN
B) INNER JOIN
C) OUTER JOIN
D) SELF JOIN
5. Which data dictionary view provides information about all tables accessible to the current user?
A) USER_TABLES
B) SESSION_TABLES
C) DBA_TABLES
D) ALL_TABLES
Solutions:
| Question # 1 Answer: A | Question # 2 Answer: D | Question # 3 Answer: C | Question # 4 Answer: C | Question # 5 Answer: D |
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