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The main key to passing the 1Z0-171 exam is to use your time affectionately and grasp every topic so you can attempt the maximum number of questions in the actual 1Z0-171 Exam. By studying the questions mentioned in the prep material, the candidates have control over the exam anxiety in no time.
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Data Dictionary and Time Zones | 5% | - INTERVAL data types - Using data dictionary views - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP |
| Topic 2: Retrieving and Sorting Data | 15% | - DEFINE and VERIFY commands - Using SELECT statement and column aliases - Arithmetic expressions and NULL values - Limiting rows and substitution variables - Operators, literals, DISTINCT keyword - Sorting query results - Operator precedence rules |
| Topic 3: Using Functions | 25% | - Date arithmetic and date functions - Nested functions - Restricting group results - Group functions and grouping data - Character functions for string manipulation - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - Data type conversion: implicit and explicit - NVL, NULLIF, COALESCE functions - ROUND, TRUNC, MOD functions |
| Topic 4: Managing Indexes, Synonyms, Sequences | 5% | - Create and manage synonyms - Create and manage sequences - Create and manage indexes |
| Topic 5: Using Subqueries | 5% | - Correlated subqueries for update and delete - Single-row and multi-row subqueries |
| Topic 6: Using SET Operators | 5% | - Matching SELECT statements - UNION, UNION ALL, INTERSECT, MINUS operators - Using ORDER BY with set operations |
| Topic 7: Controlling User Access | 5% | - Roles creation and privilege assignment - System vs object privileges - Granting privileges on tables |
| Topic 8: DDL for Tables and Relationships | 15% | - CREATE TABLE statement - Table structure, columns, data types - Drop columns, set unused columns - Views management - Constraints management - TRUNCATE TABLE statement - Temporary and external tables |
| Topic 9: Managing Tables with DML | 5% | - Transaction management and control - INSERT, UPDATE, DELETE operations - Multi-table INSERT and MERGE statements |
| Topic 10: Displaying Data from Multiple Tables | 10% | - Different types of joins: equijoin, non-equijoin, outer join, self-join - Cartesian products |
| Topic 11: Relational Database Concepts | 5% | - SQL SELECT clauses and ERD components - Relationship between database and SQL - Relational database theoretical and physical aspects |
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NEW QUESTION # 108
Which type of privilege allows a user to perform administrative tasks, such as creating other users?
Answer: D
NEW QUESTION # 109
What is the purpose of a correlated subquery?
Answer: B
NEW QUESTION # 110
Which of the following SET operators combines results from two queries and removes duplicates?
Answer: B
NEW QUESTION # 111
Which function returns the current system date and time in the database session's time zone?
Answer: D
NEW QUESTION # 112
What happens when a temporary table is created in Oracle Database?
Answer: B
NEW QUESTION # 113
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