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In Oracle what is system global area and how is it organized?
The SGA is a collection of shared memory fields which along with the Oracle processes constitute an Oracle instance. All SGA components allocate and deallocate space within units of granules. Granule size is determined through total SGA size. On most platforms, the size of a granule is 4 MB if the total size of SGA is less than 1 GB, and granule size is 16MB for larger SGAs. A few platform dependencies arise. For instance, on 32-bit Windows, the granule size is 8M for SGAs larger than 1GB
Compute the closure (F+) for the following set of the functional dependencies defined on R(a,b,c,d), where F - {c→ a, ab → d, a → b, d → c}, i.e. what are all of the FDs implied b
A database has been designed for this beauty parlour in order for the staff to manage specific things such as bookings made by clients, payments, staff availability, level of exper
Explain the Difference between DROP and DELETE DELETE deletes one or more than one tuples of a particular relation from the database. DROP is employed to remove a table from th
Explain What is Relation? A database relation is a predefined row or column format for storing information in a relational database. Relations are equal to tables.
What is meant by Physical blocks? The input and output operations are completed in block units. The blocks residing on the disk are referred to as physical blocks.
Type of database technology
What is vertical fragmentation? Vertical fragmentation divides the relation by decomposing the scheme R of relation r.
What are the advantages of embedded query language? Give an example of an embedded SQL query. Embedded query language - SQL could be implemented within two ways. It can be us
Consider the 1ollowin8 relation: CAR SALE (Car_id, Option_type, Option_listprice, Sale_date, Option_discountedprice) This relation refers to options installed in cars (e.g., crui
Question: In a multi-user database environment, locking mechanisms can be used to solve the three basic problems of concurrency. On the other hand, however, locking may also le
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