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Oracle 1Z1-171 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Managing Tables with DML | 5% | - INSERT, UPDATE, DELETE operations - Transaction management and control - Multi-table INSERT and MERGE statements |
| Displaying Data from Multiple Tables | 10% | - Different types of joins: equijoin, non-equijoin, outer join, self-join - Cartesian products |
| Using Subqueries | 5% | - Correlated subqueries for update and delete - Single-row and multi-row subqueries |
| Relational Database Concepts | 5% | - Relationship between database and SQL - Relational database theoretical and physical aspects - SQL SELECT clauses and ERD components |
| Data Dictionary and Time Zones | 5% | - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP - INTERVAL data types - Using data dictionary views |
| Managing Indexes, Synonyms, Sequences | 5% | - Create and manage sequences - Create and manage synonyms - Create and manage indexes |
| Controlling User Access | 5% | - System vs object privileges - Granting privileges on tables - Roles creation and privilege assignment |
| DDL for Tables and Relationships | 15% | - Temporary and external tables - Views management - Drop columns, set unused columns - Constraints management - Table structure, columns, data types - CREATE TABLE statement - TRUNCATE TABLE statement |
| Using Functions | 25% | - Restricting group results - Character functions for string manipulation - Group functions and grouping data - TO_CHAR, TO_NUMBER, TO_DATE conversion functions - Date arithmetic and date functions - Data type conversion: implicit and explicit - Nested functions - NVL, NULLIF, COALESCE functions - ROUND, TRUNC, MOD functions |
| Retrieving and Sorting Data | 15% | - Sorting query results - Arithmetic expressions and NULL values - Operators, literals, DISTINCT keyword - Operator precedence rules - Using SELECT statement and column aliases - DEFINE and VERIFY commands - Limiting rows and substitution variables |
| Using SET Operators | 5% | - Using ORDER BY with set operations - Matching SELECT statements - UNION, UNION ALL, INTERSECT, MINUS operators |
Oracle Database 23ai SQL Associate Sample Questions:
Question 1
How can you ensure that data is sorted in descending order in a SQL query?
A. Use the DISTINCT keyword
B. Use the ASC keyword
C. Use the DESC keyword
D. Use the ORDER keyword
Question 2
Which clause in an UPDATE statement typically uses a subquery to assign values to columns?
A. WHERE
B. HAVING
C. FROM
D. SET
Question 3
Which clause is used to allow a user to grant a privilege to others?
A. WITH ADMIN OPTION
B. WITH SHARE OPTION
C. WITH SELECT OPTION
D. WITH GRANT OPTION
Question 4
What does the INTERSECT operator do in SQL?
A. Returns rows that are present in both queries
B. Combines rows from two queries and includes all duplicates
C. Returns rows from the first query that are not present in the second query
D. Combines all rows from two queries without any conditions
Question 5
The column data type is converted to a primary key.
A. CREATE INDEX
B. CREATE SYNONYM
C. CREATE ALIAS
D. CREATE SEQUENCE
Solutions:
| Question 1 Answer: C | Question 2 Answer: D | Question 3 Answer: D | Question 4 Answer: A | Question 5 Answer: B |
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