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| Section | Weight | Objectives |
|---|---|---|
| Displaying Data from Multiple Tables | 10% | - Different types of joins: equijoin, non-equijoin, outer join, self-join - Cartesian products |
| Relational Database Concepts | 5% | - Relationship between database and SQL - Relational database theoretical and physical aspects - SQL SELECT clauses and ERD components |
| Using SET Operators | 5% | - Using ORDER BY with set operations - Matching SELECT statements - UNION, UNION ALL, INTERSECT, MINUS operators |
| Retrieving and Sorting Data | 15% | - Operators, literals, DISTINCT keyword - Sorting query results - Limiting rows and substitution variables - DEFINE and VERIFY commands - Using SELECT statement and column aliases - Operator precedence rules - Arithmetic expressions and NULL values |
| Using Functions | 25% | - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - Restricting group results - Group functions and grouping data - ROUND, TRUNC, MOD functions - Data type conversion: implicit and explicit - Date arithmetic and date functions - Character functions for string manipulation - Nested functions - NVL, NULLIF, COALESCE functions |
| Using Subqueries | 5% | - Correlated subqueries for update and delete - Single-row and multi-row subqueries |
| DDL for Tables and Relationships | 15% | - Constraints management - Views management - Drop columns, set unused columns - TRUNCATE TABLE statement - CREATE TABLE statement - Table structure, columns, data types - Temporary and external tables |
| 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 sequences - Create and manage indexes - Create and manage synonyms |
| Controlling User Access | 5% | - Granting privileges on tables - System vs object privileges - Roles creation and privilege assignment |
| Managing Tables with DML | 5% | - Multi-table INSERT and MERGE statements - INSERT, UPDATE, DELETE operations - Transaction management and control |
>> 1Z1-171 Exam Questions Vce <<
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NEW QUESTION # 27
Which clause in an UPDATE statement typically uses a subquery to assign values to columns?
Answer: A
NEW QUESTION # 28
Which command grants a user the ability to query data from a specific table?
Answer: D
NEW QUESTION # 29
What does the following SQL statement do?
SELECT e.employee_id, d.department_name
FROM employees e
JOIN departments d ON e.department_id = d.department_id;
Answer: A
NEW QUESTION # 30
Which SQL keyword is used to remove duplicate rows from the result set of a query?
Answer: A
NEW QUESTION # 31
Which SQL clause can be used in Oracle to limit the number of rows returned?
Answer: B
NEW QUESTION # 32
......
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