Define and explain COM?
Answers were Sorted based on User's Feedback
Answer / riddhi
COM is a specification of how to build the components that
link with each other dynamically. It provides the standard
that the component should follow to ensure that they
operate with each other.
Benefits of COM
1) Language Independence: components can be written in any
language and can link with the other component written in
different language. So the component doesnt become obselete
as new prog languages evolve
2)Customizing applications: application is no longer static
entity since new modules can be easily added or existing
can be modified.
3)Distributed Applications: Its easier with COM as
applications is already fragmented in components. component
can be replaced by the remote component on local m/c that
fwd request over n/w to actual component.
| Is This Answer Correct ? | 23 Yes | 7 No |
Answer / chandrasekharreddy siddamreddy
COM is a specification, set of rules, to develope the
binaries( either DLL or EXE or OCX ).
If you follw the rules provided by the COM you will get the
following benifits
1. Language Indipendent
2. Location Transperency
3. Version compatability
| Is This Answer Correct ? | 16 Yes | 5 No |
Answer / rajesh kumar sitaraman
COM (Component Object Model) technology in the Microsoft
Windows-family of Operating Systems enables software
components to communicate. COM is used by developers to
create re-usable software components, link components
together to build applications, and take advantage of
Windows services.
| Is This Answer Correct ? | 23 Yes | 13 No |
Answer / deepak
COM (Component Object Model) technology in the Microsoft
Windows-family of Operating Systems enables software
components to communicate. COM is used by developers to
create re-usable software components, link components
together to build applications, and take advantage of
Windows services.
| Is This Answer Correct ? | 9 Yes | 8 No |
Answer / shan
component object module is com.It defines standard binary
interface between object modules.this interface defines the
function calling methodology standardised structure.
| Is This Answer Correct ? | 8 Yes | 8 No |
Answer / rameshnaidu
COM:
Interface between the component and application.can be
easily upgraded on network.
| Is This Answer Correct ? | 6 Yes | 7 No |
What is a moniker ?
Write a JCL to copy only selected members from a partitioned data set to another partitioned data set. (Use: IEBCOPY)
How can would you create an instance of the object in COM
Explain object pooling?
How does a DCOM component know where to instantiate itself?
Suppose we have object B and aggregated object C (in- proc server), created by B. Can you access any interface of B from C?
What is IUnknown? What methods are provided by IUnknown?
How to Use structs in COM interfaces when Automation compatibility is not an issue?
How do we create dcom object in vb6?
Can you explain what is dcom?
Differentiate normal DLL to COM DLL
Explain transaction atomicity?