Technology Questions

A default constructor is a constructor that either has no parameters, or if it has parameters, all the parameters have default values.

In single virtual machine,JVM passes arguments only by value.

No. The mode is specified via the SYSCTL DD card in the JCL.

One of the most common errors that you might face in join statements is 

Server: Msg 4104, Level 16, State 1, Line 1
The multi-part identifier could not be bound.

A multipart identifier is any description of a field or table that contains multiple parts - for instance MyTable.SomeRow - if it can't be bound that means there's something wrong with it - either you've got a simple typo, or a confusion between table and column. It can also be caused by using reserved words in your table or field names and not surrounding them with [].

The main reason for this error is that the source table cannot be found, for example if you have statement such as Table1.OrderDate, and then if you get error above, this means that Table1 cannot be found in the query. Sometimes you can see that source table exists in the query, but T-SQL cannot understand it, especially when you write join statements.

Inheritance is the ability to create new classes based on existing classes. It is useful to reuse existing code.

It is the folder that contains web applications. The folder that has been published as virtual folder by IIS can only contain web applications

The INTO option moves the information in the TIOA into the reserved specified area, while the SET option simply returns the address of the TIOA to the specified BLL cell or address of a linkage-section.

A network in which there are multiple network links between computers to provide multiple paths for data to travel.