Tag Archives: Nullable Types

Improving Quartile Calculations in Delphi

Whilst the definition of Quartiles (see Wikipedia) is basically agreed upon, the calculation of the 1st and 3rd Quartiles is not – and it is tough to find even two Stats Packages that compute them the same way 🙁 Some, … Continue reading

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Nulls and Nullable Types in Delphi

ESBPCS has always supported Nulls via our Components – even those that are not Data Aware. I lectured a fair bit on Database Design in the early ’90s and emphasised the need and value of Nulls in Databases. Whilst we … Continue reading

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