Sql multiple choice questions

SQL Online Quiz

SQL stand for Structured query language and this is the basic of almost all the database driven software. How much you are efficient in SQL will also define you much time and money you can save the development cost of your software. What is the full form of SQL? Originally based upon relational algebra and tuple relational calculus, SQL consists of a data definition language and a data manipulation language. The scope of SQL includes data insert, query, update and delete, schema creation and modification, and data access control. Which operator performs pattern matching? What operator tests column for the absence of data? In SQL, which of the following is not a data definition language commands? This, of course, necessarily means that there will be redundancies. What if we only want to select each distinct element? This is easy way to accomplish in SQL. The syntax is as follows:. Which of the SQL statements is correct? Which SQL keyword is used to retrieve only unique values? Which SQL keyword is used to retrieve a maximum value? What is a view? A A view is a special stored procedure executed when certain event occurs. B A view is a virtual table which results of executing a pre-compiled query. A view is not part of the physical database schema, while the regular tables are. C A view is a database diagram. A view do not contain data of their own. They are used to restrict access to the database or to hide data complexity. Which of the following SQL commands is used to retrieve data? Which of the following is a SQL aggregate function?

PL/SQL Online Quiz


As per my experience good interviewers hardly plan to ask any particular question during your Job interview and these model questions are asked in the online technical test and interview of many Medical companies. The normal login security is sufficient for MySQL, and it does not have any extra controls of its own. Michael Widenius B. Bill Joy C. Bill Gates D. Stephanie Wall E. Some sort of client program to access the databases C. A Browser D. MySQL comes with as standard with client libraries for: A. C only B. Java only C. Java and C D. C, C and the. What kind of replication is supported by the MySQL server? Multiple-master replication B. Master to slave replication C. Single file based clustering D. Internally information is held in tables. Which of these is NOT a valid format: A. BDB B.

Sql Server MCQ Quiz


Which of the following statements is true about implicit cursors? Implicit cursors are used for SQL statements that are not nameD. Developers should use implicit cursors with great carE. Implicit cursors are used in cursor for loops to handle data processing. Implicit cursors are no longer a feature in OraclE. Ans: A. Which of the following is not a feature of a cursor FOR loop? Record type declaration. Opening and parsing of SQL statements. Fetches records from cursor. Requires exit condition to be defineD. Ans: B. A developer would like to use referential datatype declaration on a variablE. How would the developer define this variable using referential datatypes? Use employeE. Declare it to be type LONG. Which three of the following are implicit cursor attributes? If left out, which of the following would cause an infinite loop to occur in a simple loop? LOOP B. Which line in the following statement will produce an error? There are no errors in this statement. Ans: C. None, cursor for loops handle cursor opening implicitly. Ans: D. It causes the cursor to close B. It causes the cursor to open C. It loads the current row values into variables D. It creates the variables to hold the current row values Ans: B. Only one B.

SQL Multiple Choice Question set-1


These objective type SQL Server questions are very important for campus placement test and job interviews. As per my experience good interviewers hardly plan to ask any particular question during your Job interview and these model questions are asked in the online technical test and interview of many IT companies. Digital Base Mapping System. Data Borrowing and Movement Software. Database Management System. Database Manipulation Software. It is good at handling geographical concepts. It is widely used. It is simple and easy to understand. It uses a pseudo-English style of questioning. Keys may be unique or have multiple occurrences in the database. It cannot use SQL. Queries are possible on individual or groups of tables. Tables are linked by common data known as keys. Data are organized in a series of two-dimensional tables each of which contains records for one entity. A row or record in a database table. Another name for the key linking different tables in a database. An attribute attached to a record. The need for multiple copies of the same data and subsequent merging after separate updates. The need to manage long transactions. The need for manual transfer of records to paper. The need for multiple views or different windows into the same databases. The need for concurrent access and multi-user update. The need to split objects into their component parts. The ability to represent the world in a non-geometric way. The ability to develop more realistic models of the real world. The ability to develop databases using natural language approaches. The ability to develop database models based on location rather than state and behaviour. To specify the syntax and semantics of SQL data definition language. To specify the syntax and semantics of SQL manipulation language. A virtual table that can be accessed via SQL commands. A virtual table that cannot be accessed via SQL commands. A base table that can be accessed via SQL commands. A base table that cannot be accessed via SQL commands. Increased dependence on a single vendor.

MCQs – SQL Basics

As per my experience good interviewers hardly plan to ask any particular question during your Job interview and these model questions are asked in the online technical test and interview of many IT companies. A formal parameter is declared within the called procedure, while an actual parameter is declared in thecalling environment. Which of the following statements is true about implicit cursors? Implicit cursors are used for SQL statements that are not named. Developers should use implicit cursors with great care. Implicit cursors are used in cursor for loops to handle data processing. Implicit cursors are no longer a feature in Oracle. Ans: A 2. Which of the following is not a feature of a cursor FOR loop? Record type declaration. Opening and parsing of SQL statements. Fetches records from cursor. Requires exit condition to be defined. A developer would like to use referential datatype declaration on a variable. How would the developer define this variable using referential datatypes? Use employee. Declare it to be type LONG. Which three of the following are implicit cursor attributes? If left out, which of the following would cause an infinite loop to occur in a simple loop? LOOP B. Which line in the following statement will produce an error? There are no errors in this statement. None, cursor for loops handle cursor opening implicitly. It causes the cursor to close B. It causes the cursor to open C. It loads the current row values into variables D. Only one B. All that apply C. All referenced D. Statement and Row B.

Part1 - SQL Multiple choice Question - Self Assessment Test



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