Technology Questions

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.

They communicate via service MVS request calls.

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

1)Divide by zero        – This is raised when any number is attempted to divide by zero.

2)TOO MANY ROWS   - A SELECT INTO statement returns more than one row.

3)CASE_NOT_FOUND - No choice in the WHEN clause of a case statement is selected.

4)LOGIN_DENIED      - An attempt to login with an invalid username or password.

5)PROGRAM_ERROR  - An internal PL/SQL problem.

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

An SQL statement is a string of characters that conforms to the syntax and format specified in the international standard.

A query is a statement that returns a record-set.

Instance is an object not an attribute

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