Algorithm to insert a key in b-tree, Computer Engineering

Assignment Help:

Algorithm to insert a key in B-tree is as follows:

1.  First search is completed for the place where the new record must be put. As the keys are inserted, they are sorted into the proper order.

2.  If the node can contain the new record, insert the new record at the appropriate pointer so that number of pointers remains one more than the number of records.

3.  If the node overflows due to there is an upper bound on the size of a node, splitting is needed. The node is divided into three parts; the middle record is passed upward and inserted into parent, leaving two children behind. If n is odd (n-1 keys in full node and the new target key), median key int(n/2)+1 is placed in parent node, the lower n/2 keys are put in the left leaf and the higher n/2 keys are put in the right leaf. If n is even, we might be have left biased or right biased means one key may be more in left child or right child correspondingly.

4.  Splitting may propagate up the tree because the parent, into which divided record is added, may overflow then it may be split.  If the root is needed to be split, a new record is formed with just two children.

 


Related Discussions:- Algorithm to insert a key in b-tree

Define apple mobileme calendar, Define Apple MobileMe Calendar The Mobi...

Define Apple MobileMe Calendar The MobileMe Calendar is a web-based calendar that can be accessed from any computer linked to the Internet, Mac or Windows. What makes it more u

Payment, how can get payment

how can get payment

Illustrate basic working of physical layer, Q. Illustrate basic working of ...

Q. Illustrate basic working of Physical layer? Physical layer: Physical layer is concerned with sending raw bits between source and destination nodes over a physical medium.

Three firm capabilities that are performance in e-commerce, Three firm capa...

Three firm capabilities that are critical for superior firm performance in e-commerce are:- 1.  Information technology capability,  2.  Strategic flexibility, and  3.  Tr

Does weblogic jms support clustering, WebLogic JMS handles cluster-wide, tr...

WebLogic JMS handles cluster-wide, transparent access to destinations from any server in the cluster. A system administrator can set up cluster-wide, transparent access to destinat

When do we need to use cgi, There are innumerable caveats to this answer, b...

There are innumerable caveats to this answer, but basically any Webpage containing a form will need a CGI script or program to process the form inputs.

Explain about memory buffer register, Q. Explain about Memory Buffer Regist...

Q. Explain about Memory Buffer Register? Memory Buffer Register (MBR): It's a register that comprises the data to be written in memory (write operation) or it obtains the data

Define hit ratio, Define Hit ratio. The performance of cache memory is ...

Define Hit ratio. The performance of cache memory is frequently measured in terms of quantity called hit ratio. Hit-Find a word in cache. Miss-Word is not found in cache.

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

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!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd