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 the following functions of Oracle with suitable examples: (i) To_Char( ) (ii) Count( ) (iii) Trim( ) (iv) Length( ) Ans: (i) To_char( ): The TO_CHAR function conver
Show, with the help of an example, that relatively high-level transitions result when system or program is stimulated by the outside events. In diagram below, we can observe i
Define Deadlock prevention These protocols make sure that the system will never enter a deadlock state. There are two methods to deadlock prevention. One approach makes sure t
Create an index for the table Client, field CLIENT_NO of Q ? Command: CREATE INDEX client_client_no ON client(client_no);
What is meant by functional dependencies? Consider a relation schema R and α C R and β C R. The functional dependency α ->β holds on relational schema R if in any legal relati
What is the use of RAID? A variety of disk-organization methods, collectively called redundant arrays of independent disks are used to better the performance and reliability.
Explain the two constraints, check and foreign key in SQL along with an example for each. Give the syntax. CHECK constraint - CHECK constraint specifies an expression which
Define garbage collection. Garbage may be formed also as a side effect of crashes. Periodically, it is essential to find all the garbage pages and to add them to the list of fr
What is 2NF? A relation schema R is in 2NF if it is in 1NF and every non-prime attribute A in R is fully functionally dependent on primary key.
I need help with data warehousing and business intelligence course project about designing a data warehouse for a jewelry company that does not have one
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