Physical Memory The total physical memory, also called RAM, installed on your computer. Available
represents the amount of free memory that is available for use. The System Cache
shows the current physical memory used to map pages of open files. Kernel Memory Memory used by the operating system kernel and device drivers. Paged is memory
that can be copied to the paging file, thereby freeing the physical memory. The
physical memory can then be used by the operating system. Nonpaged is memory that
remains resident in physical memory and will not be copied out to the paging file.

IUnknown is a basic interface existing in windows, which should be inherited by all
other interfaces designed. the methods are - -> AddRef() -> Release() -> QueryInterface()

When you log in, your client contacts the Kerberos server and uses your password to prove your identity. In return it receives a special "ticket granting ticket" (TGT), valid for several hours.
When your client wants to contact a network service on your behalf (e.g. to mount a network file share), it first contacts the Kerberos server with the TGT and the name of the service. The Kerberos server issues a service ticket, which your client presents to the actual network service. The network service validates the ticket (without contacting the Kerberos server) and allows the connection.

A user interface object built upon the Xt Intrinsics (the X Toolkit). Similar to a widget, a gadget lacks certain data structures (such as a window) contained in a widget. The gadget maintains this data on the client side, rather than on the server, as does a widget. Although seldom used with today's server performance levels, gadgets remain supported by BX.

its just like dump cmd used in RPGLE. you can able to see variable values used in CL pgm

during the time of compilation of a file , constrains are being removed, from the
file .but at the time of compliation keys are not removed in case from pf. constraints has no affects on members of a pf but keys has affect on members of pf.

Check point and restart logic are mainly used when our table has 1000 records and we are getting abend after 100 records and we want to start the execution after 100th record we use this.for this we have to use check points for every 100 records.

COPY PENDING status A state in which, an image copy on a table needs to be taken, In this status,
the table is available only for queries. You cannot update this table. To remove
the COPY PENDING status, you take an image copy or use REPAIR utility. CHECK PENDING When a table is LOADed with ENFORCE NO option, then the table is left in
CHECK PENDING status. It means that the LOAD utility did not perform constraint
checking.

Bind is a compulsory step in DB2 programming, because only after the Bind step you will get the executable load module.

load a Table using LOAD UTILITY provided by db2. LOAD REPLACE replace old data in the Table(resets a tablespace and related indexes to
empty before loading)