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Explain differance between Primary and secondary storage ?
Computer storage is classified within primary(main) memory and secondary(peripheral) storage.a) Primary storage is commonly RAM; ~10ns access timeb) Secondary storage is commonly hard disk drives; ~10ms access timec) Secondary storage is a lot cheaper than primary, 3¢/Mb vs.$1/Mb.
a) Databases are stored in secondary memory, and large databases are manipulated in secondary storage.b) We required minimising disk accesses while accessing and manipulating databases.
A database named yourusernameFMA has been set up for you to use for this assignment. For the FMA you must create the required tables and run the queries using this database. If y
A file of employee have 10,000 blocks on a cylinder of a disk with characteristics r=8ms and btt=0.6ms I want to know the cost of read inthe file under following conditions for a q
atient(PNumber, Name, NHS_no, Amount_due, DNO, Doctor, Medical_Treatment), relation of schema Staff(StaffNum, Name, DNO, Task) and relation of schema Dept(DNO, Name, Location, Dire
Explain Record Based Logical Models? Record-Based logical Models: Also define data at the conceptual and view levels. Unlike object-oriented models, are used to state overall
Explain the concept of generalization and aggregation in E_R diagrams. Give one example for each one of them? Generalization: Consider extending the entity set account throug
What is an Index? An index is a small table having only two columns. The first column has a copy of the primary or candidate key of a table and the second column having a set o
The ER diagram clearly showing the additional tables you have implemented. SQL table creation scripts for the tables you have set up. SQL scripts showing the sample data you
List any eight applications of DBMS. a) Universities b) Airlines c) Banking d) Credit card transactions e) Tele communication f) Sales g)Finance h) Manufac
. Ashutosh Dubey who is the director of Gyan Gurukul want a three-level schema architecture for the Gyan Gurukul Company that provide better security also design a data abstraction
Can a stored procedure call itself or recursive stored procedure? How much level SP nesting is possible? Yes. Because Transact-SQL supports recursion, you can write kept proced
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