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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
What is known as fudge factor? The number of partitions is enhanced by a small value called the fudge factor, which is usually 20 percent of the number of hash partitions compu
anyone have a textbook solutions case fair, 8 edition of vol 1 ?, please give me
Explain the term High level DML? High level DML A high-level or non-procedural DML permit the user to specify what data is needed without specifying how it is to be acquired.
multiplicity constarin
Differentiate between Key and superkey? Key and superkey - A key a single attribute or a combination of two or more attributes of an entity set in which is used to identify o
Which product produces the relation that has attributes of R1 and R2 ? Cartesian product produce the relation which has attributes of R1 and R2
Law Associates is a large legal practice based in Sydney. You have been asked to design a data model for the practice based upon the following specification: The practice emplo
What are the advantages of Logical Databases? It offers a simple-to-use selection screens. You can change the pre-generated selection screen to your needs. It offers check f
Define the basic operations of the relational algebra? Ans: Basic operators of relational algebra are: 1. Union (∪) - Selects tuples which are in either P or Q or in bot
Define seek time. The time for repositioning the arm is known as the seek time and it enhances with the distance that the arm is known as the seek time.
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