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!
What is DBMS and what are functions of DBMS?
DBMS consist of collection of integrated data and set of program to admission those data.
The functions performed by a typical DBMS are the subsequent:
• Data Definition: The DBMS gives functions to define the structure of the data in the application. These involved defining and modifying the record structure, the kind and size of fields and the several constraints/conditions to be satisfied through the data in each field.
• Data Manipulation: Once the data structure is described, data required to be inserted, modified or deleted. The functions that perform these operations are also element of the DBMS. These functions can handle planned and unplanned data manipulation required. Planned queries are those that form part of the application. Unplanned queries are ad-hoc queries that are performed on a required basis.
• Data Security & Integrity: The DBMS contains functions that handle the security and integrity of data in the application. These can be therefore the DBMS provides an environment which is both convenient and efficient to use while there is a large volume of data and several transactions to be proved
#explain five disadvantages of a dbms..
One-way Associations If an association is only traversed in single direction, then it is known as one-way association. It is implemented as a pointer or an attribute which con
A relation instance indicates as r is a collection of tuples for a given relational schema at a exact point of time. A relation state r of the relation schema R (A 1 ,A 2 ,.....
Question: (a) What are decision support systems, and what role do they play in the business environment? (b) Data mining is a knowledge discovery process of automated extr
With the help of an example display how records can be deleted and updated in QBE. (i) Increase Pay_Rate of employees along with the skill of ‘cook' by 10%. (ii) Delete employee
This assignment concerns the Research database. The database ER model is shown above, where attributes are omitted for clarity. The relational model for the database is: Departm
When is UPDATE_STATISTICS command used? - When processing of large data is done, this command is used. - Whenever large number of modification, deletions or copy takes place
Give some encryption techniques? A) DES B) AES C) Public key encryption
Describe queries with complex types? The present extension of the SQL query language deal with the complex type Let us start with the simple example: Find the title and t
What are the various states through which a transaction passes through in its lifetime? Briefly discuss all the events that causes transition from one state to another. Ans:
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: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd