Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Multilevel Indexing Scheme
Consider the indexing scheme where the address of the block is consider in the index for each record, for a little file, this index would be little and can be processed efficiently in the main memory. Though, for a large file the size of index can also be very big. In such a case, one can make a hierarchy of indexes with the lowest level index pointing to the records, whereas the higher level indexes point to the indexes on indexes.
The following points about the multi-level indexes given below:
After discussing so much about the indexes let us now turn our attention to how an index can be executed in a database. The indexes are executed through B Trees. The following section defines the index execution in more detail.
what is meant semantic query optimization? how does it differ from other query optimization techniques?
Speedup Query Processing: A query that includes data at various sites can be split into sub-queries. These sub- queries can be implemented in parallel by various sites. Such parall
anyone have a textbook solutions case fair, 8 edition of vol 1 ?, please give me
Home based assignment Consider an ORDER table with the following attributes: • Order Number (ONo),Customer Number (CNo),Customer Name (CNa),Item Number (INo),Unit Price (UP), Quant
What is Candidate Key Super Key or Candidate Key: It is such an attribute of a table that can uniquely recognize a row in a table. Generally they have unique values and can n
How does a query tree represent a relational algebra expression? Ans: This includes transforming an initial expression (tree) into an equivalent expression (tree) that is
What is a relationship called when it is maintained between two entities? A relationship is called Binary relationship when it is maintained between two entities.
Which two tools are used to administer users for Active Directory?
What is Specialization? Specialization: Specialization permits you to describe new types of information (new structural types or latest domains of information), although reusin
What is Primary key? Primary Key - Primary key is one of the candidate keys which uniquely identifies each row in the relation.
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd