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Explain Composite attribute in SQL ? Composite attribute: A composite attribute has many components, each of that is atomic or composite.
What is the error handling Traditionally, bits have been sent over line lacking any error correcting scheme in physical layer. The presence of the CPU in each modem makes it po
Explain four causes for failures in data warehouse projects
WHAT IS DATABASE TECHNOLOGIES
what is er digram given that example of hospital,bank and library er digram.
What is the difference among a primary index and a secondary index? Primary Index: A primary index is an ordered file whose records are of fixed length along with two fields.
This assignment concerns the Research database. The database ER model is shown above, where attributes are omitted for clarity. The relational model for the database is: Departm
construct a b-tree for the following set of key values 2,3,5,7,11,17,19,23,29,31.assume that the tree is initial empty and the values are added in ascending order
What is meant by software and hardware RAID systems? RAID can be executed with no change at the hardware level, using only software modification. Such RAID implementations are
what is cascading rollback
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