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What is a guard condition? Explain it with a suitable example.
The guard-condition is a Boolean expression written with respect to parameters of triggering event and attributes and links of object which owns state machine. The guard condition can also involve tests of simultaneous states of the current machine (or explicitly designated states of some available object); for case, "in State1" or "not in State2". State names can be fully qualified by nested states which contain them, yielding path names of form ''State1: State2::State3''; this can be used in a case where same state name occurs in various composite state regions of an overall machine.
Determine object representation As a designer, we must choose properly that when to use primitive types in representing objects and when to combine groups of related objects,
The indices are accumulated in the index files. The data is accumulated in the data files. Indices give fast access to data items. For example, a book database may be managed in th
List the table modification commands in SQL? A) Deletion B) Updates C) Insertion D) Update of a view
what are the topics in data management
Type of views : Simple views and Difficult Views Feature Simple Views Complex Views Number of tables One
The database will enable college administrators the ability to track students initial major. This will help college officials decide how best to prepare students for their goals an
What are the difference between clustered and a non-clustered index? A clustered index is a special type of index that reorders the way records in the table are physically stor
#what is cursor its uses ? Explain it
losers with new information systems
Can we delete data element, which is being used by table fields. No we cant delete data element.
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