SQL Primer

Relational Algebra

Published by: Dr. Ralph Heider
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Description

1970 E.F. Codd has started a revolution with his paper 'A relational model of data for large shared data banks, Communications of the ACM, Volume 13, Issue 6 (June 1970)' that finally led to the today's omnipresent database query language SQL.
This little app shows some primitive and derived operations with the following information:
* SQL92 and SQL86/89 sample queries,
* the results of the queries and
* appropriate descriptions.
Furthermore the SQL test script that has been used for the calculation of the samples can be displayed.
The app is interesting for the first contact with the database subject and for all who are using SQL86/89 queries for over two decades now and finally want to change to SQL92 also ;)
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SQL Primer FAQ

  • Is SQL Primer free?

    Yes, SQL Primer is completely free and it doesn't have any in-app purchases or subscriptions.

  • Is SQL Primer legit?

    Not enough reviews to make a reliable assessment. The app needs more user feedback.

    Thanks for the vote

  • How much does SQL Primer cost?

    SQL Primer is free.

  • What is SQL Primer revenue?

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User Rating
App is not rated in Poland yet.
Ratings History

SQL Primer Reviews

Exactly what I was looking for

Ddd1600 on

United States

Simple, very very simple my only complaint is theres not enough content to really justify the app but I still like it

Отличная шпаргалка

Qwertyппппр on

United States

Спасибо

Is what it says, elementary

Mohgeroth on

United States

Elementary SQL, very elementary. If you've written SQL on the job anywhere chances are this will teach you little to nothing. It's very bland though but is focused on simple presentation. If your learning or taking a class, the visuals are nice for things like outer joins. Good start!

Poor content

Kale238 on

United States

This app looked to have done in a hurry. Content is pretty weak.

Nice and simple

Piggyho on

United States

Nice ref I really like this app for quick lookup

Not very good

PenThAng on

United States

Just not good, not really useful.

Good beginning primer

Keither713 on

United States

Excellent for beginners using basic syntax example & explanations. Look forward to more advanced priming!

Cool

ttim6575 on

United States

Thanks good stuff

request

동기화 on

United States

firmware 3.1.2 version support please.

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