subject

1) Write expressions of relational algebra for the following queries draw the query trees for each and write the SQL statement: a. What PC models have a speed of at least 3.00 b. What the model numbers of all color printers c. Which manufacturer make laptops with at least 100 GB d. Find the model and price of all products (of any type) made by manufacturer "B" e. Find the manufacturers that sell laptops but not PC.

ansver
Answers: 3

Another question on Computers and Technology

question
Computers and Technology, 22.06.2019 02:30
Larry sent an email to andy. andy didn't open larry's email but still understood what the message was. how did andy determine the message without opening the email?
Answers: 1
question
Computers and Technology, 23.06.2019 01:30
Jason works as an accountant in a department store. he needs to keep a daily record of all the invoices issued by the store. which file naming convention would him the most? a)give the file a unique name b)name the file in yymmdd format c)use descriptive name while naming the files d)use capital letters while naming the file
Answers: 3
question
Computers and Technology, 24.06.2019 00:30
Setting up a home network using wireless connections is creating a a. vpn b. lan c. wan d. mini-internet
Answers: 2
question
Computers and Technology, 24.06.2019 01:30
Hazel has just finished adding pictures to her holiday newsletter. she decides to crop an image. what is cropping an image?
Answers: 1
You know the right answer?
1) Write expressions of relational algebra for the following queries draw the query trees for each a...
Questions
question
Mathematics, 27.03.2021 01:00
question
History, 27.03.2021 01:00
Questions on the website: 13722361