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!
Consider the simple relation Employee(ID, salary) storing the employee Ids and salaries, where ID is a key. Consider the following two triggers over this relation:
create trigger T1 after insert on Employee referencing new as New_Emp update Employee set salary = 1.1 * (select max(salary) from Employee) where ID = New_Emp.ID for each row
create trigger T2 after insert on Employee referencing newtable as New_Emp update Employee set salary = 1.1 * (select max(salary) from Employee) where ID in (select ID from New_Emp) for each statement
Assume that relation Employee has no tuples in it initially. You are to show the simplest example you can think of where using trigger T1 will produce a different final database state than using trigger T2.
Draw an Entity Relationship diagram for the system and Identify the table design for the database displaying all the fields/attributes. Ensure that all tables are in 3NF. You also need to identify the primary keys and foreign keys, where applicable..
Design an updateable database for storing customer and sales data. Explain how to deal with the problems of missing data.
Create a Microsoft Access database. Create the tables, fi elds, data types, and primary key(s) for the database. Create the relationship(s) needed between the tables.
Illustrate relational algebra expressions for names of all salespeople, names of all salespeople having ORDER row and names of salespeople not having ORDER row.
Design a work breakdown structure for the task below: Designing the database, Working on the website content
Write down the SQL code in order to carrying out the following requests. Display all the data in each of the four tables. Do not display the foreign key columns.
These following questions require to you to create entities and their relationship using the Crow's Foot notation suitably.
Create Entity-Relationship diagram for a bookstore database, that maintains information about books, professional journals, their authors, and publishers.
What criteria would you use in selecting a life-cycle model for the project?
Indicate the changes (using the shorthand representation) that you would need to make to the original premiere products database desing to support the following requirements.
It is not uncommon to have to access the data which reside in different tables, especially when formulating a report.
Using data mining, it is possible to gather information which has been buried that can be manipulated and cross indexed which could be a valuable information gathering technique for entities.
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