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Oracle 1Z0-171 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Displaying Data from Multiple Tables | 10% | - Different types of joins: equijoin, non-equijoin, outer join, self-join - Cartesian products |
| Relational Database Concepts | 5% | - Relational database theoretical and physical aspects - SQL SELECT clauses and ERD components - Relationship between database and SQL |
| Controlling User Access | 5% | - System vs object privileges - Roles creation and privilege assignment - Granting privileges on tables |
| DDL for Tables and Relationships | 15% | - Views management - Temporary and external tables - TRUNCATE TABLE statement - Table structure, columns, data types - Constraints management - Drop columns, set unused columns - CREATE TABLE statement |
| Retrieving and Sorting Data | 15% | - DEFINE and VERIFY commands - Operator precedence rules - Sorting query results - Limiting rows and substitution variables - Operators, literals, DISTINCT keyword - Arithmetic expressions and NULL values - Using SELECT statement and column aliases |
| Using SET Operators | 5% | - Using ORDER BY with set operations - Matching SELECT statements - UNION, UNION ALL, INTERSECT, MINUS operators |
| Using Subqueries | 5% | - Single-row and multi-row subqueries - Correlated subqueries for update and delete |
| Data Dictionary and Time Zones | 5% | - Using data dictionary views - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP - INTERVAL data types |
| Managing Tables with DML | 5% | - Transaction management and control - Multi-table INSERT and MERGE statements - INSERT, UPDATE, DELETE operations |
| Managing Indexes, Synonyms, Sequences | 5% | - Create and manage sequences - Create and manage synonyms - Create and manage indexes |
| Using Functions | 25% | - Restricting group results - Group functions and grouping data - Data type conversion: implicit and explicit - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - Date arithmetic and date functions - Character functions for string manipulation - NVL, NULLIF, COALESCE functions - ROUND, TRUNC, MOD functions - Nested functions |
Oracle Database 23ai SQL Associate Sample Questions:
1. Which clause is used to ensure that only specific rows are deleted in a DELETE statement?
A) FROM
B) HAVING
C) SET
D) WHERE
2. Which of the following is an example of an object privilege?
A) DROP DATABASE
B) ALTER USER
C) SELECT ON table_name
D) CREATE TABLE
3. What will the following query return?
SELECT TO_CHAR(SYSDATE, 'DD-MM-YYYY') AS formatted_date FROM dual;
A) The time part of the current date
B) An error
C) The current date in the format 'DD-MM-YYYY'
D) The current date in the default system format
4. Which of the following best describes a relational database?
A) A flat file system with no defined relationships between data
B) A database where all data is stored as key-value pairs
C) A database that organizes data hierarchically
D) A database that uses a tabular structure with rows and columns to represent relationships between data entities
5. The column data type is converted to a primary key.
A) CREATE SEQUENCE
B) CREATE INDEX
C) CREATE ALIAS
D) CREATE SYNONYM
Solutions:
| Question # 1 Answer: D | Question # 2 Answer: C | Question # 3 Answer: C | Question # 4 Answer: D | Question # 5 Answer: D |
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