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| Section | Weight | Objectives |
|---|---|---|
| Managing Tables with DML | 5% | - Transaction management and control - Multi-table INSERT and MERGE statements - INSERT, UPDATE, DELETE operations |
| Displaying Data from Multiple Tables | 10% | - Different types of joins: equijoin, non-equijoin, outer join, self-join - Cartesian products |
| Data Dictionary and Time Zones | 5% | - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP - INTERVAL data types - Using data dictionary views |
| Controlling User Access | 5% | - Granting privileges on tables - System vs object privileges - Roles creation and privilege assignment |
| Relational Database Concepts | 5% | - SQL SELECT clauses and ERD components - Relationship between database and SQL - Relational database theoretical and physical aspects |
| Managing Indexes, Synonyms, Sequences | 5% | - Create and manage indexes - Create and manage sequences - Create and manage synonyms |
| Retrieving and Sorting Data | 15% | - Using SELECT statement and column aliases - Operator precedence rules - Sorting query results - Arithmetic expressions and NULL values - Operators, literals, DISTINCT keyword - Limiting rows and substitution variables - DEFINE and VERIFY commands |
| Using Subqueries | 5% | - Single-row and multi-row subqueries - Correlated subqueries for update and delete |
| Using Functions | 25% | - Data type conversion: implicit and explicit - Date arithmetic and date functions - Nested functions - Restricting group results - NVL, NULLIF, COALESCE functions - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - Group functions and grouping data - Character functions for string manipulation - ROUND, TRUNC, MOD functions |
| DDL for Tables and Relationships | 15% | - Drop columns, set unused columns - Temporary and external tables - TRUNCATE TABLE statement - Table structure, columns, data types - Constraints management - Views management - CREATE TABLE statement |
| Using SET Operators | 5% | - UNION, UNION ALL, INTERSECT, MINUS operators - Matching SELECT statements - Using ORDER BY with set operations |
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NEW QUESTION # 19
What happens when a unique index is created on a table column?
Answer: B
NEW QUESTION # 20
Which function is used to convert a string to uppercase in SQL?
Answer: D
NEW QUESTION # 21
What does the following command do?
GRANT CREATE SESSION TO user_name;
Answer: B
NEW QUESTION # 22
The column data type is converted to a primary key.
Answer: A
NEW QUESTION # 23
What does a Cartesian product in SQL result from?
Answer: A
NEW QUESTION # 24
......
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