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 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 2 / 20 The redo log buffer and Shared pool are elements of? Buffer cache SGA PGA PGA and Buffer cache 3 / 20 The NVL function is used to replace NULL values with another or given value? True False 4 / 20 Which schema object instructs Oracle to connect to remotely access an object of a database? Sequence Remote Link Data Link Database Link 5 / 20 What is the result of the following "ORA’NULL’CLE"? ORA CLE ORACLE NULL ERROR 6 / 20 What is the result of the following ‘ORA’NULL’CLE’? Error ORACLE NULL ORA CLE 7 / 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. 8 / 20 Which of the following is not a type of join? Inner Spin Outer Equi 9 / 20 Which processes is an instance made of Oracle? Memory processes Oracle background processes Data processes All of the Mentioned 10 / 20 Which of the following is record based logical model? Object oriented model Network Model E-R Model None of the above 11 / 20 How many memory layers does Oracle shared pool have? 3 2 10 4 12 / 20 Which of the following areas of PGA stores binding variables and run-time buffers information? Stack space Private SQL area Session area SQL area 13 / 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 14 / 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 15 / 20 Which schema object instructs Oracle to connect to remotely access an object of a database? Remote Link Data Link Sequence Database Link 16 / 20 Which of these are temporal data types? Sum datatype, Count datatype, and Average datatype Date datatype, Time stamp datatype, Interval datatype Join datatype, Equi datatype, Inner datatype Sub query, Sub joins, and Cross joins 17 / 20 Which of the following is not a Key in SQL Server? Alternate Foreign Secondary Primary 18 / 20 Which of the following package procedure is UNRESTRICTED in Oracle? EXECUTE_QUERY CLEAR_BLOCK CALL_INPUT USER_EXIT 19 / 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 20 / 20 What is the result of the following "ORA’NULL’CLE"? ORA CLE ORACLE NULL ERROR Your score isThe average score is 0% 0% Restart quiz
