Oracle Entry-Level Interview Questions October 7, 2024September 15, 2024 by AJ Oracle Entry-Level Interview Questions Here is a quick and informal assessment quiz to evaluate the foundational knowledge and skills of candidates aspiring to start their careers in Oracle technologies. This assessment focuses on core database concepts, SQL proficiency, and an understanding of Oracle tools. Let's get right at it! 1 / 20 The NVL function is used to replace NULL values with another or given value? True False 2 / 20 Which of the following package procedure is UNRESTRICTED in Oracle? EXECUTE_QUERY CLEAR_BLOCK CALL_INPUT USER_EXIT 3 / 20 Which of the following components comprise an Oracle architecture? Database related background processes Tablespaces Datafiles All of the above-mentioned 4 / 20 Which of the following is referred to as the language used application programs to request data from the DBMS? Query language DDL DML None of the above 5 / 20 How many memory layers does Oracle shared pool have? 3 2 10 4 6 / 20 Which of the following is another name of Oracle database’s design? Database Schema Database Abstraction Database Instance None of the Mentioned 7 / 20 Which of the following is correct about Oracle? OracleDB is another name for it Oracle is a relational database management system Oracle was built in 1977 All of the above-mentioned 8 / 20 ________ are generally executed in the form of subqueries where rows are picked up only from the first (left) table concerning a condition (or a set of conditions) that is matched in the second table. Anti-Join Query Semi-Join Query Natural Join Outer Join 9 / 20 Which of the following is not a Key in SQL Server? Alternate Foreign Secondary Primary 10 / 20 Which of the following keyword is used with Data Control Language (DCL) statements? GRANT SELECT DELETE INSERT 11 / 20 Which schema object instructs Oracle to connect to remotely access an object of a database? Remote Link Data Link Sequence Database Link 12 / 20 You can add a datafile to a tablespace by using the ALTER TABLESPACE ADD DATAFILE SIZE; statement. True or False? True False 13 / 20 Which processes is an instance made of Oracle? Memory processes Oracle background processes Data processes All of the Mentioned 14 / 20 What is the result of the following "ORA’NULL’CLE"? ORA CLE ORACLE NULL ERROR 15 / 20 What is the result of the following "ORA’NULL’CLE"? ORA CLE ORACLE NULL ERROR 16 / 20 Which of the following is correct in this scenario? The user can not create tables The user can create tables The user cannot query any tables None of the Mentioned 17 / 20 The redo log buffer and Shared pool are elements of? Buffer cache SGA PGA PGA and Buffer cache 18 / 20 Which of the following statements is not an advantage of bind variables? Bind variables also protect against SQL injection attacks, require minimal maintenance, and reduce memory usage. Bind variables improve performance through caching and reusing, reducing the need for parsing Bind variables uses heuristics or rules of thumb and statistics to decide on the most efficient execution plan based on available indexes, table size, and query complexity. Non of the above. 19 / 20 Which schema object instructs Oracle to connect to remotely access an object of a database? Sequence Remote Link Data Link Database Link 20 / 20 When you join two or more tables, views, or materialized views, you combine ____ from both tables, views, or materialized views. Columns Rows Both A and B None of the above Your score isThe average score is 0% 0% Restart quiz
