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Define upgrade and downgrade? It gives a mechanism for conversion from shared lock to exclusive lock is called as upgrade. It gives a mechanism for conversion from exclusive
Define Network DBMS The NDBMS is built primarily on a one-to-many relationship, but where a parent-child representation between the data items cannot be ensured. This may occur
Consider the following relational scheme: R (a,b,c,d,e,f) and its corresponding set of FDs {d→ a, be → c, ac → e, b → f, f → d, a → c}. a. Is the following decomposition i) non
composite attribute
#question.what is mapping constraints and types?.
Vertical Fragmentation- Vertical fragmentation groups together only those attributes in a relation that are used jointly by various important transactions. A vertical fragment is d
please give me introduction to full data in D B M S in a short assignment
What is association? Give an example of association Association is used for establishing relationships among classes. Association describe links among/between classes. For exa
example of bank
Which data type can store unstructured data? Raw data type can store unstructured data.
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