What is the base cluster ?
The base cluster consists of the data component and the index component for the primary index of a KSDS. Read more »
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What is a VSAM split ?
If there isn’t enough space in the control interval VSAM performs a control interval split by moving some records to the free control intervals. If there... Read more »
What is free space ?
Free space is reserved within the data component of a KSDS to accommodate inserting new records. Read more »
What is the upgrade set ?
The upgrade set is the list of all AIXes that VSAM must maintain for a specific base cluster, so that when data in the base cluster is updated, the AIX files are... Read more »
What is a path ?
A path is a file that allows you to access a file by alternate index - the path provides an association between the AIX and the base cluster. Read more »
What is the catalog ?
The catalog contains the names of all datasets, VSAM and non-VSAM. It is used to access these datasets. Read more »
What is a cluster ?
A cluster is the combination of the index, sequence set and data portions of the dataset. The operating system gives program access to the cluster, ie. to all parts... Read more »
What is a CI, control interval ?
A control interval is the unit of information that VSAM transfers between virtual and auxiliary storage. Read more »
How are records stored in an ESDS, entry sequenced dataset ?
They are stored without respect to the contents of the records and in the order in which they are included in the file. Read more »
What are the types of VSAM datasets ?
Entry sequenced datasets (ESDS), key sequenced datasets (KSDS) and relative record dataset (RRDS). Read more »
What are the RDO Methods and Events?
Methods Events Begin Trans Validate Commit Trans Reposition Rollback Trans Error Cancel Query Complied Refresh Update Controls Read more »
Different types of Lock Types?
RdConcurReadOnly 0 (Default) RdConcurLock 1 (Pessimistic Locking) RdConcurRowver 2 (Optimistic Lociking) RdConcurValues 3 RdConcurBatch 4 Read more »
What are the record set types?
RdOpenFowardOnly 0 (Default used only for the read only purpose) RdOpenStatic 1 RdOpenDynamic 2 RdOpenKeySet 3 (Normally used for the live project) Read more »
What methods are used for DBGrid in unbound mode?
AddData, EditData, Readdata, WriteData. Read more »
What is view Port?
The area under which the container provides the view of the ActiveX Document is known as a view port. Read more »