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Differentiate between Primary and secondary storage?
Primary and secondary storage - Primary storage device stores the data temporarily. Primary storage is commonly used through the processing unit to temporary store the data, intermediate results, and the final results before storing to the secondary storage since the secondary storage devices are not directly accessible through the CPU. But, if we need to store data permanently then the secondary storage devices are needed. Secondary storage devices are slower than the primary storage devices.
i want to database for online assignment submission system
What is serializability? Explain its types? The data base system must control concurrent implementation of transactions, to ensure that the data base state remains consistent.
What is the difference between SQL Server 2000 clustered and nonclustered indexes? With a clustered index, the data are kept in the bottom level of the index and in the similar
Define Boyce codd normal form A relation schema R is in BCNF with respect to a set F of functional dependencies if, for all functional dependencies in F + of the form.α ->β.
Normalization :It is a process of examine the given relation schemas based on their primary key and Functional Dependencies (FDs) to achieve the properties Minimizing redun
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Cardinality of Relationship One-to-One Only one entity of the first set is linked to only one entity of the second set. E.g. A teacher teaches a student. Only one teacher
Why is need for the multiple access paths?
Define the terms i) Entity type ii) Entity set Entity type: An entity type describes a collection of entities that have the similar attributes. Entity set: The set of all en
explain three types of internet risks to the consummers whent he business system is data dependent. how can we minimise these risks
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