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I've been trying to go over my tuple calculus over and over again for hours and days. What's worse is my professor and tutors are not much help during their hours.
Does anyone know a good place to learn about tuple calculus? I'm having a hard time understanding how to "speak" the language in terms of what I want to get from a database.
Thanks, Sam
Two good books I would suggest:
Theory of Relational Databases by David Maier
Fundamentals of Database Systems by Elmasri and Navanthe
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I'm developing a product for retailers and I'm looking for an ready database of grocery SKUs for testing purposes. Would this be available anywhere? Any help is highly appreciated
It's a bit of a long shot, but if you go to http://publicdata.eu/ and select the "agriculture" group, you can limit the results by format of data (on the right hand side under "Resource Formats") and I know it isn't ideal, but they often have XLS and similar spreadsheet type formats with data regarding the agriculture industry in Europe. I'm not sure if that would include SKUs, but it might be a decent place to start?
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Please help finding software/database with mobile phones make/model/characteristic database. I need it to integrate into my website.
Most of these are copyrighted so we can't help you. Best idea is to pull the data manually from the makes you know....
There might be free sources out there, but I highly doubt it.
edit
to update my post... Wikipedia is a great source of information, but please observe the licenses which they have over their data. Most often, it's the Creative Commons License, but this doesn't meant that their sources have other licenses... And there are others too...
Manufacturers/Makes:
http://en.wikipedia.org/wiki/List_of_mobile_phone_makers_by_country
http://www.phonearena.com/
Models:
http://www.phonearena.com/
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I've convinced my boss (for the second time actually - 2 different companies) to invest in new workstations with SSD's and I need to do a before and after benchmarking. I don't want to rely on timing VS2010 opening a solution, compile time etc. Does anyone know a good benchmarking tool for this purpose - not only disk IO, but also CPU etc.
There are many programms which let you do benchmarks on cpu,harddisk, gpu....
Maybe this website provides a solution for you :
http://www.makeuseof.com/tag/5-free-benchmark-programs/
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Alright, our visual studio solution grows big in terms of the number of projects in it. Except for things that are obvious, I want to check whether the way it is now is what it has to be or we can better reorganize/package it.
Do you know of any good text on guidelines, principles of package and component design that I can reference? Something in depth, with good analysis, not just tier a, b,c or layer 1, 2, 3, etc.
Thanks.
Chapter 28 in the book Agile Principles, Patterns, and Practices in C# by Robert Martin and Micah Martin covers the principles.
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Alternatively, anyone know of where I can get the EAV model for Erwin?
Why would anybody want to build an EAV system using a SQL database? It's a square peg in a round hole.
If you are really convinced that EAV is the appropriate solution for your problem domain why not choose a database product which supports it? Cassandra or Voldemort or Dynomite?
the tables and structure will depend on your domain.
here is information you can use as sample/template - wiki