Interview Questions

Q:

What are session method and call transaction method and explain about them?

Answer

Call Transaction Method: In Call Transaction method we call the transaction in BDC program itself. If we want this program is executed by some one else then we need to expose the code to him. Call Transaction Method Works in Foreground. No Display Mode is equal to Background Processing in call transaction method. Call Transaction Method can handle only one Application at a time. In Call Transaction Method no Log File by Default. We have to design Log File by using BDCMSGCOLL. Call Transaction Method Updates the Database Asynchronously. (Note: Asynchronous updation is Faster than Synchronous)
 
Batch Session Method: On the other hand in batch session method we create a session which can be executed at any time by any authorized person without exposing the code of the program. Session Method works in Background and as well as in Foreground. Session Method can handle Multiple Applications at a time. Session Method holds Log File by Default. Session Method Updates the Database Synchronously.

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Subject: ABAP

0 2036
Q:

What is the use of API’s in cloud services?

Answer

API stands for Application programming interface is very useful in cloud platforms as it allows easy implementation of it on the system. It removes the need to write full fledged programs. It provides the instructions to make the communication between one or more applications. It also allows easy to create application with ease and link the cloud services with other systems.

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Subject: Cloud Computing

0 2035
Q:

What is Shift() method in Javascript?

Answer

-The shift() method is similar as the pop() method but the difference is that Shift method works at the beginning of the array. 


-The shift() method take the first element off of the given array and returns it. The array on which is called is then altered.


For example


var myarray = ["apple ", "banana ", "mango "]; 


console.log(myarray.shift());


console.log(myarray);


we get the following console output:


apple


["banana ", "mango "];


 


When we call shift() on an empty array, it will return an undefined value.

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Subject: Web Technology

0 2034
Q:

APK full form in Android?

Answer

APK stands for Android Application Package.


 


Android Package (APK) is the package file format used by the Android operating system for distribution and installation of mobile apps and middleware.

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2 2033
Q:

How to insert Javascript in HTML?

Answer

We can insert JavaScript in HTML using <Script tag>. JavaScript can be enclosed in <script type = text/javascript> and ending with </script>.


Example: 


<html> 


  <body> 


        <script type="text/javascript"> 


               ...JavaScript….


         </script> 


   </body> 


</html>

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Subject: Web Technology

0 2033
Q:

What is JDBC ?

Answer

JDBC technology is an API (included in both J2SE and J2EE releases) that provides cross-DBMS connectivity to a wide range of SQL databases and access to other tabular data sources, such as spreadsheets or flat files. With a JDBC technology-enabled driver, you can connect all corporate data even in a heterogeneous environment.

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Subject: Java

0 2033
Q:

What is needed to make a multiple choice list with a custom view for each row?

Answer

Multiple choice list can be viewed by making the CheckBox android:id value be “@android:id /text1". That is the ID used by Android for the CheckedTextView in simple_list_item_multiple_choice.

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0 2032
Q:

What is the purpose of the wait(), notify(), and notifyAll() methods ?

Answer

The wait(), notify(), and notifyAll() methods are used to provide an efficient way for threads to wait for a shared resource. When a thread executes an object's wait() method, it enters the waiting state. It only enters the ready state after another thread invokes the object's notify() or notifyAll() methods..

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Subject: Java

0 2031