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Technical Interview Questions and Answers :: Virtusa


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    111 / 221

    What is difference between Procedure and Function?

    Procedure are used as a script

    function are used as a method

    procedure can returned zero , single or multiple values

    function can returned one value which is mandatory

    procedure have input/output parameters

    function have input parameter only

    procedure can not be used in select statement

    function can be used in a select statement

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    112 / 221

    What is a Stored Procedure? State its advantage.

    A stored procedure is a set of per-compiled SQL commands (query statements), which are stored in the server. It is faster then the loose SQL statements processed on client, as it is per-compiled. It can execute more then one SQL commands once as they are bundled in a single entity. We can use control statements within the stored procedure, which will allow us to repeat some SQL command. It can send return values depending upon the result. Stored procedures are used to reduce network traffic.

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    113 / 221

    What is stack and queue?

    Stack is a sequential datastructure which will follow last in first out (LIFO) rules. The mainly operations of stack are : push pop peer empty and full.

    Qeque is also a sequential datastructure which will work on First In First Out(FIFI) . It is the datastructure with restriction that the insertion will be performed from one end and deletion from the another end with help of front and rear. The mainly operations will be performed are : enque and deque operations .

    We can implement both by using an array (i.e. static implementation ) and another is using linklist that is dynamic implementation.

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    114 / 221

    What are the basic difference between STACK AND QUEUE.

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    115 / 221

    Access modifier in c and java?

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    116 / 221

    Explain Software Development Life Cycle (SDLC).

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    A database is a logically coherent collection of data with some inherent meaning, representing some aspect of real world and which is designed, built and populated with data for a specific purpose.

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    It is a collection of programs that enables the user to create and maintain a database. In other words, it is general-purpose software that provides the users with the processes of defining, constructing and manipulating the database for various applications.

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    119 / 221

    What is a Database system?

    The database and DBMS software together are called as Database system.

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    1. Reduces Data Redundancy

    2. Maintains Data Consistent

    3.Query to access data

    4. Security

    5. Easier access by tables

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