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Oracle 1Z0-171 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Using SQL Functions | - Use character, number, and date functions in SELECT statements - Use conversion functions |
| Using Joins | - Use cross joins - Use equijoins and non-equijoins - Use self-joins - Use outer joins (LEFT, RIGHT, FULL) |
| Controlling User Access | - Create and manage roles - Grant and revoke privileges - Differentiate system privileges from object privileges |
| Using Set Operators | - Use UNION, UNION ALL, INTERSECT, and MINUS operators |
| Using SELECT Statements | - Use the WHERE clause to restrict rows - Use the ORDER BY clause to sort rows - Use the FETCH clause to limit rows returned - Execute a basic SELECT statement |
| Using DDL Statements | - Create and manage sequences - Create and manage views - Create and manage indexes - Create and manage tables - Create and manage constraints |
| Using DML Statements | - Insert rows into a table - Control transactions - Update rows in a table - Delete rows from a table - Use the MERGE statement |
| Using Subqueries | - Use single-row subqueries - Use correlated subqueries - Use multiple-row subqueries |
Oracle Database 23ai SQL Associate Sample Questions:
Question 1
What does a Cartesian product in SQL result from?
A. An OUTER JOIN with NULL values
B. A NATURAL JOIN without specifying join conditions
C. An INNER JOIN without specifying join conditions
Question 2
How are NULL values treated in relational databases?
A. NULL values are not allowed in relational databases.
B. NULL values are treated as zero.
C. NULL values are treated as empty strings.
D. NULL values represent missing or unknown data.
Question 3
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
Question 4
What does the following SQL statement do?
CREATE TABLE employees (
employee_id NUMBER PRIMARY KEY,
first_name VARCHAR2(50),
hire_date DATE NOT NULL
);
A. Creates a table with only VARCHAR2 and DATE columns
B. Creates a table with a primary key and a NOT NULL constraint
C. Creates a table with no constraints
D. Creates a temporary table
Question 5
How does SQL handle NULL values in arithmetic expressions?
A. Treats them as the largest possible number
B. Produces a NULL result
C. Treats them as zero
D. Produces an error
Solutions:
| Question 1 Answer: C | Question 2 Answer: D | Question 3 Answer: D | Question 4 Answer: B | Question 5 Answer: B |
