How in a relation a supertype or subtype is mapped
Explain how in a relation a supertype or subtype is mapped?
Expert
A separate relation is created for each and every supertype and subtype. The attributes general for all of the subtypes are allocated to the supertype. Each and every subtype has the primary key from the supertype assigned to it. A subtype discriminator is added to the supertype.
Describe briefly the difference between a shared lock and an exclusive lock?
When two relational tables is connected to SQ Trans, what are the probable errors it will be thrown?
Explain the term queue in data structure? Answer: In data structure a queue is a sequential organization of data. It is a first in first out i.e. FIFO type of data s
What occurs while rows are determined using a FETCH statement?
What are the utilities Oracle gives, which are utilize for backup and recovery?
Specify the types of the tracing level?
How do you inform DBPAK regarding Stored Procedure?
State the types of users in the Business Objects?
What the difference between sequential file stage and hashed file stage is in relates to DataStage Server?
Briefly describe the fundamental stages of Data Warehousing?
18,76,764
1939476 Asked
3,689
Active Tutors
1427869
Questions Answered
Start Excelling in your courses, Ask an Expert and get answers for your homework and assignments!!