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To delete a particular column in a relation which command is used ?
To delete a particular column in a relation ALTER command is used.
DBMS, Programming
The relation Member(StudentId, OrganizationId, RoleId) stores the membership information of student joining organization. For example, ('S1', 'O2', 'R3') indicates that student with Id 'S1' joined the organization with i ...
Real Time Analytics - Data Analytics Assignment - This is a business analytics project aimed at generating innovative analytics solutions for a Global Food Consulting firm working in the area of Animal agriculture and fa ...
Databases Assignment - Monash Library Services (MonLib) Case Study TASK 1: Data Definition For this task you are required to complete the following: 1.1 - Add to your solutions script, the CREATE TABLE and CONSTRAINT def ...
Quesiton: 1. What is Data-Manipulation Language (DML)? There are four types of access in DML, explain each one. 2. Assume we have a Library Database consists of the following relations: author(author_id, first_name, last ...
In SQL Database Questions: Phase-1 In 100 words, what steps can one take to avoid losing work? Which command is used to save changes to the database? What is the syntax for this command? Phase-2 In 100 words, explain the ...
SQL Assignment In these exercises, you'll enter and run your own SELECT statements. You will use the MyGuitarShop database for these queries. If you do not already have the MyGuitarShop database, the SQL script and the i ...
SQL Transactions Exercises Consider table Item(name,price) where name is a key, and the following two concurrent transactions. T1: Begin Transaction; Update Item Set price = 2*price Where name = 'pencil'; Insert Into Ite ...
Question : a) Suppose you are a marathon runner that can run a maximum of n miles on a single bottle of water. You are given a map of your marathon route with all the water stations marked. Design an efficient algorithm ...
Question: Create the physical data model for the logical data model that you submitted in IP3. This should include all of the data definition language SQL. Your submission should include all DDL needed to: Create the tab ...
Background A new training organization called ABC TechTraining is opening soon and they have approached you to help design their new database. They have just completed the refurbishment of the premises and are now lookin ...
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