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 are the DBMS languages? Briefly explain?
Data Definition language (DDL):A database schema is specified through a set of definitions expressed through a special language called data definition language. For instance, the subsequent statement in the SQL describes the account table
Create table account (account_number char(10), balance integer)
Execution of the above DDL statement creates the account table. DDL permits a user to specify storage structure and access techniques used through the database system as well as specify certain consistency constraints such as balance of an account should on fall below Rs1000.
Data Manipulation language (DML): A data-manipulation language (DML) is a language which enables users to access or manipulate data as organized through the appropriate data model.
There are basically two types:
1) Procedural DMLs needs a user to specify what data are required and how to get those data. 2) Declarative DMLs (also referred to as nonprocedural DMLs) need a user to specify what data are required without specifying how to get those data.
Describe substring comparison in SQL. For the relation Person (name, address), write a SQL query that retrieves the names of people whose name starts along with ‘A' and address co
What is storage manager? A storage manager is a program module that gives the interface among the low level data keeps in a database and the application programs and queries su
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
List the requirements needed to design a trigger. The requirements are:- Specifying when a trigger is to be implemented. State the actions to be taken when the trigger im
What is an Operand? The data on which the operation is to be performed is known as an Operand
anyone have a textbook solutions case fair, 8 edition of vol 1 ?, please give me
Make SQL statements for the following scenarios. Your response should contain SQL statement, output and any other assumptions you have made to arrive at the answer. For Colorado cu
#question benefits and limitations of data models..
Explain heap file with advantages? Heap File is an unordered set or a group of records, stored on a set of pages. This class gives basic support for inserting, updating, select
The issues relating to the Design of the Physical Database Files Physical File is a file as stored on the disk. The major issues relating to physical files are: • Cons
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