Azure DWH part 15: PolyBase and Azure Data Lake

In this article, we will learn how to query a csv file stored in the Data Lake using PolyBase.

Data Types

Data Types

DML

Data Mining Part 39: Azure Machine Learning vs Microsoft Data Mining

In earlier chapters, we talked about the Microsoft Data Mining enemies. We will talk now about Microsoft Azure Machine Learning.

Discrete and Continuous Data in SQL

Not all data is discrete; some data types represent a continuum. In SQL, we have to approximate them and live with the special problems of handling continuous data. We need to understand the problems associated with continuous data types, when these will happen, and how it affects constraints and the results of queries. Joe Celko explains.

Generating Data for Database Tests

It is more and more essential for developers to work on development databases that have realistic data in both type and quantity, but without using real data. It isn't exactly easy, even with third-party tools to hand. Phil Factor shows how it can be done, taking the classic PUBS database and giving it a more realistic set of data.