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Oracle 1Z1-171 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: DDL for Tables and Relationships | 15% | - TRUNCATE TABLE statement - Drop columns, set unused columns - Constraints management - Temporary and external tables - Table structure, columns, data types - CREATE TABLE statement - Views management |
| Topic 2: Controlling User Access | 5% | - Granting privileges on tables - Roles creation and privilege assignment - System vs object privileges |
| Topic 3: Managing Indexes, Synonyms, Sequences | 5% | - Create and manage indexes - Create and manage synonyms - Create and manage sequences |
| Topic 4: Using Subqueries | 5% | - Correlated subqueries for update and delete - Single-row and multi-row subqueries |
| Topic 5: Using SET Operators | 5% | - UNION, UNION ALL, INTERSECT, MINUS operators - Using ORDER BY with set operations - Matching SELECT statements |
| Topic 6: Data Dictionary and Time Zones | 5% | - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP - Using data dictionary views - INTERVAL data types |
| Topic 7: Using Functions | 25% | - Character functions for string manipulation - Restricting group results - Date arithmetic and date functions - Group functions and grouping data - NVL, NULLIF, COALESCE functions - Nested functions - ROUND, TRUNC, MOD functions - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - Data type conversion: implicit and explicit |
| Topic 8: Managing Tables with DML | 5% | - Transaction management and control - INSERT, UPDATE, DELETE operations - Multi-table INSERT and MERGE statements |
| Topic 9: Relational Database Concepts | 5% | - Relational database theoretical and physical aspects - Relationship between database and SQL - SQL SELECT clauses and ERD components |
| Topic 10: Displaying Data from Multiple Tables | 10% | - Different types of joins: equijoin, non-equijoin, outer join, self-join - Cartesian products |
| Topic 11: Retrieving and Sorting Data | 15% | - Operators, literals, DISTINCT keyword - Using SELECT statement and column aliases - Operator precedence rules - Arithmetic expressions and NULL values - DEFINE and VERIFY commands - Limiting rows and substitution variables - Sorting query results |
Oracle Database 23ai SQL Associate Sample Questions:
Which data dictionary view provides information about all the columns in tables accessible to the current user?
- A. ALL of the above
- B. USER_COLUMNS
- C. ALL_TAB_COLUMNS
- D. DBA_TAB_COLUMNS
Correct Answer: A 🗳️
Which SQLPlus command displays defined substitution variable values?
- A. DEFINE
- B. VERIFY
- C. LIST
- D. SHOW
Correct Answer: A 🗳️
Which of the following best describes a relational database?
- A. A database where all data is stored as key-value pairs
- B. A database that uses a tabular structure with rows and columns to represent relationships between data entities
- C. A flat file system with no defined relationships between data
- D. A database that organizes data hierarchically
Correct Answer: B 🗳️
Which of the following statements is true about constraints in Oracle Database?
- A. Constraints cannot reference other tables.
- B. Constraints can be added or modified using the ALTER TABLE statement.
- C. Constraints can only be added when creating a table.
- D. Constraints are automatically dropped when rows are deleted.
Correct Answer: B 🗳️
What is a SELF JOIN in SQL?
- A. A join that does not require a WHERE clause
- B. A join of a table with itself
- C. A join used for Cartesian products
- D. A join between tables with identical structures
Correct Answer: B 🗳️
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