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Oracle 1Z1-171 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Using Subqueries | 5% | - Correlated subqueries for update and delete - Single-row and multi-row subqueries |
| Retrieving and Sorting Data | 15% | - Arithmetic expressions and NULL values - DEFINE and VERIFY commands - Sorting query results - Operator precedence rules - Operators, literals, DISTINCT keyword - Limiting rows and substitution variables - Using SELECT statement and column aliases |
| Using Functions | 25% | - Data type conversion: implicit and explicit - Character functions for string manipulation - Nested functions - Restricting group results - Group functions and grouping data - Date arithmetic and date functions - NVL, NULLIF, COALESCE functions - ROUND, TRUNC, MOD functions - TO_CHAR, TO_NUMBER, TO_DATE conversion functions |
| DDL for Tables and Relationships | 15% | - Constraints management - Table structure, columns, data types - Views management - CREATE TABLE statement - TRUNCATE TABLE statement - Temporary and external tables - Drop columns, set unused columns |
| Managing Tables with DML | 5% | - Multi-table INSERT and MERGE statements - Transaction management and control - INSERT, UPDATE, DELETE operations |
| Displaying Data from Multiple Tables | 10% | - Different types of joins: equijoin, non-equijoin, outer join, self-join - Cartesian products |
| Using SET Operators | 5% | - UNION, UNION ALL, INTERSECT, MINUS operators - Matching SELECT statements - Using ORDER BY with set operations |
| Managing Indexes, Synonyms, Sequences | 5% | - Create and manage synonyms - Create and manage sequences - Create and manage indexes |
| Data Dictionary and Time Zones | 5% | - CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP - INTERVAL data types - Using data dictionary views |
| Relational Database Concepts | 5% | - Relationship between database and SQL - Relational database theoretical and physical aspects - SQL SELECT clauses and ERD components |
| Controlling User Access | 5% | - System vs object privileges - Roles creation and privilege assignment - Granting privileges on tables |
Oracle Database 23ai SQL Associate Sample Questions:
1. What is the relationship between SQL and a relational database?
A) SQL is a standard query language used to interact with relational databases
B) SQL is a file system used to store relational database data.
C) SQL is used to create flat file databases.
D) SQL is a scripting language used for file manipulation.
2. Which command grants a user the ability to query data from a specific table?
A) ENABLE SELECT ON table_name TO user_name;
B) GRANT SELECT ON table_name TO user_name;
C) ALLOW SELECT ON table_name TO user_name;
D) GRANT ALL ON table_name TO user_name;
3. Which of the following statements is true about constraints in Oracle Database?
A) Constraints can only be added when creating a table.
B) Constraints can be added or modified using the ALTER TABLE statement.
C) Constraints are automatically dropped when rows are deleted.
D) Constraints cannot reference other tables.
4. What is a sequence in Oracle Database?
A) A predefined set of SQL queries executed in order
B) A list of numbers stored in a table
C) A type of index used for sorting rows
D) A database object that generates a series of unique numeric values
5. What is a SELF JOIN in SQL?
A) A join used for Cartesian products
B) A join between tables with identical structures
C) A join of a table with itself
D) A join that does not require a WHERE clause
Solutions:
| Question # 1 Answer: A | Question # 2 Answer: B | Question # 3 Answer: B | Question # 4 Answer: D | Question # 5 Answer: C |
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