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I need to write a relational algebra query for the following:
Show the item_ID, item description and category description for all items
where the supplier uses "rail" as the delivery_method.
...
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by: trippedwire |
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i have entity sets
account(account-number, balance)
branch(branch-name, branch-city, assets)
customer(customer-name, customer-street, customer-city)
loan(loan-number, amount)
and relationship...
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by: scorpiomailin |
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Hello Guys...
thanks in advance jst wondering if any1 knows answer to this....
if this is the SQL query
Author(name, hometown, publisher)
Textbook(tname, aname, price)
select A.name, publisher...
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by: lava4112 |
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Have a test on SQL, only teacher wants to know what type of relational algebra is a select, where, from--I have no idea and can not understand the teacher.
We are using Concepts of Database...
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by: salman malik |
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software for relational algebra.
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by: aiom |
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following are the given set of relations
:
STUDENT(SSN,Name,Major,Bdate)
COURSE(Course#,CName,Dept)
EnrollCourse#,Quarter,Grade)
BOOK_ADOPTION(Course#,Quarter,Book_ISBN)...
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by: muniba |
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Relational algebric expression for the following:
Draw two relational algebra query trees for the following query and show that one query tree is more eficient than the other.
"Give the number...
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by: Metallicat |
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I have been posed and attempted to answer several questions but I do not seem to be getting anywhere. I have emailed my tutor a week ago and he has not responded, If anyone can take a look and help...
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by: marktang |
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ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However,...
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by: Hystou |
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Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can...
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by: jinu1996 |
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In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven...
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by: Hystou |
last post by:
Overview:
Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows...
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by: tracyyun |
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Dear forum friends,
With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each...
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by: conductexam |
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I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and...
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by: TSSRALBI |
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Hello
I'm a network technician in training and I need your help.
I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs.
The...
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by: adsilva |
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A Windows Forms form does not have the event Unload, like VB6. What one acts like?
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by: bsmnconsultancy |
last post by:
In today's digital era, a well-designed website is crucial for businesses looking to succeed. Whether you're a small business owner or a large corporation in Toronto, having a strong online presence...
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