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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Displaying Data from Multiple Tables | 10% | - Different types of joins: equijoin, non-equijoin, outer join, self-join - Cartesian products |
| Topic 2: Using Functions | 25% | - Date arithmetic and date functions - NVL, NULLIF, COALESCE functions - ROUND, TRUNC, MOD functions - Group functions and grouping data - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - Nested functions - Restricting group results - Character functions for string manipulation - Data type conversion: implicit and explicit |
| Topic 3: Using Subqueries | 5% | - Correlated subqueries for update and delete - Single-row and multi-row subqueries |
| Topic 4: DDL for Tables and Relationships | 15% | - TRUNCATE TABLE statement - Constraints management - Drop columns, set unused columns - CREATE TABLE statement - Temporary and external tables - Views management - Table structure, columns, data types |
| Topic 5: Retrieving and Sorting Data | 15% | - DEFINE and VERIFY commands - Operator precedence rules - Using SELECT statement and column aliases - Limiting rows and substitution variables - Arithmetic expressions and NULL values - Sorting query results - Operators, literals, DISTINCT keyword |
| Topic 6: Relational Database Concepts | 5% | - SQL SELECT clauses and ERD components - Relationship between database and SQL - Relational database theoretical and physical aspects |
| Topic 7: Managing Indexes, Synonyms, Sequences | 5% | - Create and manage synonyms - Create and manage indexes - Create and manage sequences |
| Topic 8: Managing Tables with DML | 5% | - Multi-table INSERT and MERGE statements - Transaction management and control - INSERT, UPDATE, DELETE operations |
| Topic 9: Data Dictionary and Time Zones | 5% | - Using data dictionary views - INTERVAL data types - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP |
| Topic 10: Using SET Operators | 5% | - Using ORDER BY with set operations - Matching SELECT statements - UNION, UNION ALL, INTERSECT, MINUS operators |
| Topic 11: Controlling User Access | 5% | - Roles creation and privilege assignment - System vs object privileges - Granting privileges on tables |
>> 1Z0-171 Latest Study Materials <<
A whole new scope opens up to you and you are immediately hired by reputed firms. Even though the Oracle 1Z0-171 certification boosts your career options, you have to pass the 1Z0-171 Exam. This Oracle 1Z0-171 exam serves to filter out the capable from incapable candidates.
NEW QUESTION # 13
Which type of join retrieves only the rows with matching values in both tables?
Answer: C
NEW QUESTION # 14
What is the result of the following SQL query?
SELECT COALESCE(NULL, 100, 200) AS result FROM dual;
Answer: A
NEW QUESTION # 15
Which function is used to extract the year from a date in SQL?
Answer: A
NEW QUESTION # 16
Which function returns the current system date and time in the database session's time zone?
Answer: B
NEW QUESTION # 17
What does the UNION ALL operation do when selecting matching columns from different tables?
SELECT employee_id, salary FROM employees
UNION ALL
SELECT employee_id, bonus FROM bonuses;
Answer: C
NEW QUESTION # 18
......
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