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!
Representing complex relationship among data
A database may contain varieties of data interrelated to each other in numerous ways. A DBMS must have the capability to represent a variety of relationships between the data as well as to update and retrieve related data simply and efficiently.
Improved Security
Data is essential to any organisation and also confidential. In a shared system the multiple users share the data, all information has not been shared by all users. For instance, the salary of the employees has not been visible to anyone other than the department dealing in this. Therefore, database should be protected from unauthorised users. This is done by Database Administrator (DBA) by giving the usernames and passwords only to authorised users as well as granting privileges or the type of operation allowed. This is complete by using security and authorisation subsystem. Only authorised clients may use the database and their access types can be restricted to only retrieval, update, insert or delete or any of these. Let us take example; the Branch Manager of any company may have access to all data while the Sales Assistant may not have access to salary details.
Improved Backup and Recovery
A file-based system may fail to give measures to protect data from system failures. This lies only on the user by taking backups intermittently. DBMS gives facilities for recovering the hardware and software failures. A recovery and backup subsystem is liable for this. In case a program fails, it restores the database to a state in which it was before the implementation of the program.
Support for concurrent transactions
A transaction is defined as the unit of work. For illustration, a bank may be there in a transaction where an amount of Rs.5000/- is transmitted from account X to account Y. A DBMS also transmit multiple transactions to occur concurrently.
SELECT Statement This statement is used for retrieving information from the databases. It can be coupled with many clauses. Let us talk about these clauses in more detail:
DISADVANTAGES OF RDBMS
What is a transaction ? The Transaction is a unit of data processing. For instance, many of the transactions at a bank may be withdrawal or deposit of money; transfer of money f
Project Description: This is going to be a School portal to handle each activities in school such as, School fees payment, online registration and every other payment, course re
What are the properties in a relation ? In a relation Ordering of rows is immaterial and No two rows are identical.
Define Join and Outer Join and differentiate between them. Ans: Join - It generates all the combinations of tuples from two relations which satisfy a join condition. Oute
Explain controlled redundancy? Controlled redundancy : The replication of data within the data warehouse for the purposes of improved data access or understand ability.
is Chipo carrying his baby
What is the function of SQL Server Agent Windows service? - It's a Windows service that handles tasks scheduled within SQL Server environment. These tasks are also known as job
Briefly describe the different kinds of users of a DBMS. Ans: Different sorts of DBMS users are: (a) Software Engineers: These are the people accountable for developing ap
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