SQL Database design

Murilo Miranda

AlwaysOn Availability Groups – How to setup AG between a clustered and standalone instance (Part 1)

April 24, 2015 by

In this article we are going to explore how to configure an Availability Group between a clustered instance and a standalone instance, showing, step-by-step, how to setup a possible Disaster Recovery environment.

Introduced on SQL Server 2012, the Availability Groups brought the expectation to be an improved version of the database mirroring, which will be discontinued soon. The AlwaysOn Availability Groups was improved on SQL Server 2014, giving the capability of have more replicas, better troubleshooting possibilities and improving its availability. Comparing the Availability Groups with the database mirroring, in a very high level, we gained the possibility of have a listener to dynamically redirect the connection to the current active instance and also the capability of distribute the read workload between readable replicas. However, only the primary replica is able to write.

Read more »
Murilo Miranda

SQL Server 2014 – Install a clustered instance – step-by-step (3/3)

March 12, 2015 by

This article is divided in three parts, if you started here, check the first and second part to find the previous steps.

Now we need to define if the instance will work in “Windows Authentication Mode” or “Mixed Mode”. I usually choose “Mixed Mode” because there’s always an application that don’t work with domain accounts. By choosing this option you need to specify the password for the famous “sa” login. Notice that you can change the authentication mode anytime! You also need to add accounts to receive the Sysadmin privilege, this is very important… Even more if you choose the “Windows Authentication Mode”.

Read more »
Murilo Miranda

SQL Server 2014 – Install a clustered instance – step-by-step (1/3)

March 9, 2015 by

Do you want to install a SQL Server 2014 clustered instance? Not sure how to proceed? What are the requisites? This series of articles will show this, step-by-step.

In this article I’m going to explain, step-by-step, how to install clustered SQL Server instance. The SQL Server version that we will be using is the 2014, or SQL Server 12, the latest SQL Server version, so far…

Read more »
Milica Medic

SQL Database design: Choosing a primary key

March 16, 2014 by
A primary key is a column or a combination of columns that uniquely defines each row in a table. When designing a database choosing a primary key is one of the most important steps. A table can contain one or more columns suitable to be a primary key and that column or columns are called a candidate key. Only one candidate key can be selected as a primary key Read more »
Page 2 of 212