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Azure SQL Data Warehouse: Explaining the Architecture Through System Views

The architecture of Azure SQL Data Warehouse isn't easy to explain briefly, but if you have some useful queries that access the management and catalog views, and diagrams that show how they relate together, you can very quickly get a feel for what is going on under the hood. By using and extending these queries that use these views, you can check on a variety waits, blocking, status, table distribution and data movement in ASDW.

2016-11-01

3,226 reads

External Article

SQL Database: How to Configure Active Geo-Replication

Active Geo-location is powerful magic for ensuring the high availability of a Azure SQL database, and for disaster-recovery. In choosing the best options, you need to accurately understand the value that the business places on the service you're running, long it will take for a secondary replica to be in synch with the primary replica, the importance of spreading the location of replicas widely, and the maximum tolerable unscheduled downtime. Just clicking all the options could prove to be expensive.

2016-10-27

3,361 reads

External Article

Master Data Services – The Basics

Master Data Services (MDS) is Microsoft's platform for supporting Master Data Management (MDM). A system like MDS, if properly maintained, gives organisations a powerful alternative to increasingly having to centralize databases as a way of preventing data from getting out sync or become inconsistent, and a reliable way of managing the flow of data through corporate IT systems. It makes microservice architectures realistic. Hari Yadav shows you how to get up and running with MDS.

2016-10-25

4,165 reads

External Article

PowerShell Just Enough Administration

A major difficulty for a System Administrator who wishes to provide access for auditors, Helpdesk staff, developers and other IT people is that adminstrator roles give users more access than they need. It is too easy to make mistakes, or to make more changes than those that were signed-off. With JEA, it is possible to create role-based access control (RBAC) endpoints that define precisely what actions you’ll let your users carry out without needing a elevated, privileged administrator credentials, and which log and report all operations.

2016-10-19

3,276 reads

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BIT_COUNT I

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Question of the Day

BIT_COUNT I

In SQL Server 2025, I have a table (dbo.UserPermission) that contains this data: 

UserID  UserPermissions
15
23
37
What is returned when I run this code: 
select bit_count(UserPermissions) as PermissionCount
from dbo.UserPermission
where UserID = 3;

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