Data Warehousing with MySql

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Data Warehousing with MySql

Data Warehousing is the idea of setting up a separate database structure for purely reporting purposes, so you can stop compromising between reporting and transactional demands.
MySql is a database that is fast, easy to use, and (generally) free.

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MathML

For example:

Example: Solving the quadratic equation.

Suppose `ax^2+bx+c=0` and `a!=0`. We first divide by `a` to get `x^2+b/ax+c/a=0`.

Then we complete the square and obtain `x^2+b/ax+(b/(2a))^2-(b/(2a))^2+c/a=0`.

The first three terms factor to give `(x+b/(2a))^2=(b^2)/(4a^2)-c/a`.

Now we take square roots on both sides and get `x+b/(2a)=+-sqrt((b^2)/(4a^2)-c/a)`.

Finally we move the `b/(2a)` to the right and simplify to get the two solutions: `x_(1,2)=(-b+-sqrt(b^2-4ac))/(2a)`

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