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.
Data Definition Language It organises the data in the form of columns and rows. But what does the data field column of table accumulate? How do you describe it using SQL? Th
assume we have the following apllicationthat model sccer team the games they play and the players inv each teamin the design we want to capture
How much would you charge to create a database encompassing an Online Bakery with all the elements below? I. Describe the application that you would like to design. This should
Explain three main attributes of data.
Determine the method of Choosing Algorithms In general, most of operations are easy and have a satisfactory algorithm since description of what is to be done also shows how i
Regional Gardens has many nurseries, including Wagga Wagga, Bathurst, Albury, Orange, and Dubbo. Each nursery is known by its campus code, eg WW, B, A, O and D respectively. Additi
Is it mandatory to declare all the tables in Report by the key word tables for all the tables that exist in the structure of LDB, and are being explained in the Database part of LD
What's the difference between a primary key and a unique key? Both primary key and unique key enforces uniqueness of the column on which they are explained. But by default prim
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
Which product produces the relation that has attributes of R1 and R2 ? Cartesian product produce the relation which has attributes of R1 and R2
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