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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 |
| Using Functions | 25% | - Group functions and grouping data - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - ROUND, TRUNC, MOD functions - Character functions for string manipulation - NVL, NULLIF, COALESCE functions - Nested functions - Restricting group results - Date arithmetic and date functions - Data type conversion: implicit and explicit |
| Using SET Operators | 5% | - Using ORDER BY with set operations - Matching SELECT statements - UNION, UNION ALL, INTERSECT, MINUS operators |
| DDL for Tables and Relationships | 15% | - Drop columns, set unused columns - Temporary and external tables - TRUNCATE TABLE statement - Views management - CREATE TABLE statement - Constraints management - Table structure, columns, data types |
| Relational Database Concepts | 5% | - Relationship between database and SQL - SQL SELECT clauses and ERD components - Relational database theoretical and physical aspects |
| Using Subqueries | 5% | - Correlated subqueries for update and delete - Single-row and multi-row subqueries |
| Displaying Data from Multiple Tables | 10% | - Different types of joins: equijoin, non-equijoin, outer join, self-join - Cartesian products |
| Retrieving and Sorting Data | 15% | - Using SELECT statement and column aliases - DEFINE and VERIFY commands - Sorting query results - Arithmetic expressions and NULL values - Operator precedence rules - Operators, literals, DISTINCT keyword - Limiting rows and substitution variables |
| Data Dictionary and Time Zones | 5% | - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP - Using data dictionary views - INTERVAL data types |
| Managing Indexes, Synonyms, Sequences | 5% | - Create and manage indexes - Create and manage synonyms - Create and manage sequences |
| Controlling User Access | 5% | - System vs object privileges - Granting privileges on tables - Roles creation and privilege assignment |
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NEW QUESTION # 107
How can you ensure that data is sorted in descending order in a SQL query?
Answer: A
NEW QUESTION # 108
What does the following command do?
GRANT CREATE SESSION TO user_name;
Answer: C
NEW QUESTION # 109
How are NULL values treated in relational databases?
Answer: C
NEW QUESTION # 110
What is the purpose of using external tables in Oracle Database?
Answer: D
NEW QUESTION # 111
Which SQL function converts a string representation of a date into a date data type?
Answer: D
NEW QUESTION # 112
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