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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Data Dictionary and Time Zones | 5% | - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP - INTERVAL data types - Using data dictionary views |
| Topic 2: Using Functions | 25% | - NVL, NULLIF, COALESCE functions - Restricting group results - ROUND, TRUNC, MOD functions - Date arithmetic and date functions - Nested functions - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - Group functions and grouping data - Data type conversion: implicit and explicit - Character functions for string manipulation |
| Topic 3: Managing Indexes, Synonyms, Sequences | 5% | - Create and manage indexes - Create and manage sequences - Create and manage synonyms |
| Topic 4: DDL for Tables and Relationships | 15% | - Constraints management - Table structure, columns, data types - Drop columns, set unused columns - CREATE TABLE statement - Views management - Temporary and external tables - TRUNCATE TABLE statement |
| Topic 5: Relational Database Concepts | 5% | - Relational database theoretical and physical aspects - SQL SELECT clauses and ERD components - Relationship between database and SQL |
| Topic 6: Retrieving and Sorting Data | 15% | - Limiting rows and substitution variables - Using SELECT statement and column aliases - Sorting query results - Arithmetic expressions and NULL values - DEFINE and VERIFY commands - Operator precedence rules - Operators, literals, DISTINCT keyword |
| Topic 7: Using Subqueries | 5% | - Correlated subqueries for update and delete - Single-row and multi-row subqueries |
| Topic 8: Displaying Data from Multiple Tables | 10% | - Cartesian products - Different types of joins: equijoin, non-equijoin, outer join, self-join |
| Topic 9: Controlling User Access | 5% | - Roles creation and privilege assignment - Granting privileges on tables - System vs object privileges |
| Topic 10: Managing Tables with DML | 5% | - INSERT, UPDATE, DELETE operations - Multi-table INSERT and MERGE statements - Transaction management and control |
| Topic 11: Using SET Operators | 5% | - Using ORDER BY with set operations - Matching SELECT statements - UNION, UNION ALL, INTERSECT, MINUS operators |
Another great way to assess readiness is the Oracle 1Z0-171 web-based practice test. This is one of the trusted online Oracle 1Z0-171 prep materials to strengthen your concepts. All specs of the desktop software are present in the web-based Oracle 1Z0-171 Practice Exam.
NEW QUESTION # 56
What is required for the queries combined by a SET operator to work correctly?
Answer: D
NEW QUESTION # 57
Which function is used to extract the year from a date in SQL?
Answer: A
NEW QUESTION # 58
What happens when the TRUNCATE TABLE statement is executed?
Answer: C
NEW QUESTION # 59
What is a sequence in Oracle Database?
Answer: D
NEW QUESTION # 60
What will the following query do?
SELECT employee_id, salary
FROM employees
WHERE salary > (SELECT AVG(salary) FROM employees);
Answer: B
NEW QUESTION # 61
......
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