Should you store images in database tables? My advice: keep the image location (URL) in a VARCHAR column instead, so the database stays small and updates stay simple.
SQL SERVER – Q and A with Database Administrators
My Q and A with Database Administrators from interviews in India: the technical questions we discussed and my opinion on each, with a link to the full article.
SQL SERVER – Rules of Third Normal Form and Normalization Advantage – 3NF
What is Third Normal Form and what is its advantage? I ask this in every interview I take. Here are the rules of 3NF and its cost in performance.
SQL SERVER – Data Warehousing Interview Questions and Answers – Part 3
Data Warehousing Interview Questions and Answers Part 3 explains slowly changing dimensions: SCD1, SCD2, SCD3 and hybrid SCD, and what each one keeps.
SQL SERVER – Data Warehousing Interview Questions and Answers Part 2
Data Warehousing Interview Questions and Answers Part 2: normalization forms, fact and dimension table keys, data mining, view vs materialized view and ER diagrams.
SQL SERVER – Data Warehousing Interview Questions and Answers – Part 1
Part 1 of my Data Warehousing interview questions and answers, starting with the basics: what a data warehouse is and how it supports decision making.
SQL SERVER – Convert Text to Numbers (Integer) – CAST and CONVERT
How to convert text to integer with CAST and CONVERT, whether they fail on alpha-numeric values (yes), and how to pull only the numbers from a string.