Technical Interview Questions and Answers :: Syntel Inc.

printf is to print the character,integer,float,string values in %d format

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Array is an indexed based sequential datasture which is stored contigous memory locations . It is mainly used when the operation is searching of element from the list.

Link list is a sequential datastructure which consists of nodes located at non contigous memory locations. It is used when the operation is insertion and deletion.

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.

By using explicit type casting

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It ensures Data validity and

A transaction is a very small unit of a program and it may contain several lowlevel tasks. A transaction in a database system must maintain Atomicity, Consistency, Isolation, and Durability − commonly known as ACID properties − in order to ensure accuracy, completeness, and data integrity.

• Atomicity − This property states that a transaction must be treated as an atomic unit, that is, either all of its operations are executed or none. There must be no state in a database where a transaction is left partially completed. States should be defined either before the execution of the transaction or after the execution/abortion/failure of the transaction.


• Consistency − The database must remain in a consistent state after any transaction. No transaction should have any adverse effect on the data residing in the database. If the database was in a consistent state before the execution of a transaction, it must remain consistent after the execution of the transaction as well.


• Durability − The database should be durable enough to hold all its latest updates even if the system fails or restarts. If a transaction updates a chunk of data in a database and commits, then the database will hold the modified data. If a transaction commits but the system fails before the data could be written on to the disk, then that data will be updated once the system springs back into action.


• Isolation − In a database system where more than one transaction are being executed simultaneously and in parallel, the property of isolation states that all the transactions will be carried out and executed as if it is the only transaction in the system. No transaction will affect the existence of any other transaction.

ACID properties are 4 important properties of a transaction that a DBMS must ensure to maintain data in the case of concurrent access

Yes