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Assume you are given a uniprocessor system with one gigabyte of memory and a 300 gigabyte disk. The OS on the machine has a demand paged virtual memory system with a local page rep
A student entity type has the following attributes,name..
What subschema expresses ? A subschema expresses the external view. (External schemas are called also called as subschemas)
Which operator is Cartesian product in relational algebra? Cartesian product in relational algebra is a binary operator. (It requires two operands. e.g., P X Q)
What is a primary index? A primary index is an index whose search key also explains the sequential order of the file.
Waterfall model is the linear model. The process is completed by step by step. We couldn't stop in between of the process. Prototype model: after get the model by low cost budget o
Consider the relation schemas as follows. works (person name, company name, salary); lives (person name, street, city); located in(company name, city); managers (person name
Explain differance between Primary and secondary storage ? Primary and secondary storage Computer storage is classified within primary(main) memory and secondary(per
What is recovery management component? Ensuring durability is the responsibility of a software component of the base system known as the recovery management component.
explain normalisation
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