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Oracle 1Z1-171 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Controlling User Access | 5% | - Granting privileges on tables - Roles creation and privilege assignment - System vs object privileges |
| Relational Database Concepts | 5% | - SQL SELECT clauses and ERD components - Relational database theoretical and physical aspects - Relationship between database and SQL |
| Managing Indexes, Synonyms, Sequences | 5% | - Create and manage sequences - Create and manage synonyms - Create and manage indexes |
| Using Functions | 25% | - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - Nested functions - Restricting group results - Character functions for string manipulation - Group functions and grouping data - ROUND, TRUNC, MOD functions - NVL, NULLIF, COALESCE functions - Data type conversion: implicit and explicit - Date arithmetic and date functions |
| DDL for Tables and Relationships | 15% | - Table structure, columns, data types - Drop columns, set unused columns - CREATE TABLE statement - Constraints management - TRUNCATE TABLE statement - Temporary and external tables - Views management |
| Retrieving and Sorting Data | 15% | - Arithmetic expressions and NULL values - Sorting query results - Limiting rows and substitution variables - Using SELECT statement and column aliases - Operators, literals, DISTINCT keyword - Operator precedence rules - DEFINE and VERIFY commands |
| Using Subqueries | 5% | - Correlated subqueries for update and delete - Single-row and multi-row subqueries |
| Data Dictionary and Time Zones | 5% | - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP - Using data dictionary views - INTERVAL data types |
| Managing Tables with DML | 5% | - Transaction management and control - INSERT, UPDATE, DELETE operations - Multi-table INSERT and MERGE statements |
| Using SET Operators | 5% | - Using ORDER BY with set operations - Matching SELECT statements - UNION, UNION ALL, INTERSECT, MINUS operators |
| Displaying Data from Multiple Tables | 10% | - Cartesian products - Different types of joins: equijoin, non-equijoin, outer join, self-join |
Oracle Database 23ai SQL Associate Sample Questions:
1. Which function is used to convert a string to uppercase in SQL?
A) CASE_UPPER
B) CONVERT_UPPER
C) TO_UPPERCASE
D) UPPER
2. In a relational database, what is a foreign key?
A) A unique identifier for a record in a table
B) A key that is used to establish a relationship between two tables
C) A key used to sort data in a specific order
D) A temporary key generated during query execution
3. What is a sequence in Oracle Database?
A) A database object that generates a series of unique numeric values
B) A list of numbers stored in a table
C) A predefined set of SQL queries executed in order
D) A type of index used for sorting rows
4. Which SQL function can be used to replace NULL values with a specified value?
A) NVL
B) ISNULL
C) COALESCE
D) REPLACE
5. What is a SELF JOIN in SQL?
A) A join of a table with itself
B) A join between tables with identical structures
C) A join used for Cartesian products
D) A join that does not require a WHERE clause
Solutions:
| Question # 1 Answer: D | Question # 2 Answer: B | Question # 3 Answer: A | Question # 4 Answer: A | Question # 5 Answer: A |
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