This Blog is for those interested in enhancing their skillset in Database ,T-SQL, SQL Server Analysis services (SSAS) - multidimensional analysis tool,SQL Server Reporting services (SSRS) - reporting framework ,
SQL Server Integration services (SSIS) - built-in ETL tool and Visualization tools (i.e. Qlikview & Tableau)
Microsoft has introduced SQL Server 2012 to the world and it's time for IT professionals to start to come to speed on what's new.
Microsoft has introduced SQL Server 2012 to the world and it's time for IT professionals to start to come to speed on what's new in this highly anticipated version of SQL Server.
1. AlwaysOn Availability Groups -- This feature takes database mirroring to a whole new level. With AlwaysOn, users will be able to fail over multiple databases in groups instead of individually. Also, secondary copies will be readable, and can be used for database backups. The big win is that your DR environment no longer needs to sit idle.
2. Windows Server Core Support -- If you don't know what Windows Server Core is, you may want to come up to speed before Windows 8 (MS is making a push back to the command line for server products). Core is the GUI-less version of Windows that uses DOS and PowerShell for user interaction. It has a much lower footprint (50% less memory and disk space utilization), requires fewer patches, and is more secure than the full install. Starting with SQL 2012, it is supported for SQL Server.
3. Columnstore Indexes -- This a cool new feature that is completely unique to SQL Server. They are special type of read-only index designed to be use with Data Warehouse queries. Basically, data is grouped and stored in a flat, compressed column index, greatly reducing I/O and memory utilization on large queries.
4. User-Defined Server Roles -- DBAs have always had the ability to create custom database role, but never server wide. For example, if the DBA wanted to give a development team read/write access to every database on a shared server, traditionally the only ways to do it were either manually, or using undocumented procedures. Neither of which were good solutions. Now, the DBA can create a role, which has read/write access on every DB on the server, or any other custom server wide role.
5. Enhanced Auditing Features -- Audit is now available in all editions of SQL Server. Additionally, users can define custom audit specifications to write custom events into the audit log. New filtering features give greater flexibility in choosing which events to write to the log.
6. BI Semantic Model -- This is replacing the Analysis Services Unified Dimensional Model (or cubes most people referred to them). It's a hybrid model that allows one data model will support all BI experiences in SQL Server. Additionally, this will allow for some really neat text infographics
7. Sequence Objects -- For those folks who have worked with Oracle, this has been a long requested feature. A sequence is just an object that is a counter -- a good example of it's use would be to increment values in a table, based a trigger. SQL has always had similar functionality with identity columns, but now this is a discrete object.
8. Enhanced PowerShell Support -- Windows and SQL Server admins should definitely start brushing up on their PowerShell scripting skills. Microsoft is driving a lot of development effort into instrumenting all of their server-based products with PowerShell. SQL 2008 gave DBAs some exposure to it, but there are many more in cmdlets in SQL 2012.
9. Distributed Replay -- Once again this is answer to a feature that Oracle released (Real Application Testing). However, and in my opinion where the real value proposition of SQL Server is, in Oracle it is a (very expensive) cost option to Enterprise Edition. With SQL, when you buy your licenses for Enterprise Edition, you get everything. Distributed replay allows you to capture a workload on a production server, and replay it on another machine. This way changes in underlying schemas, support packs, or hardware changes can be tested under production conditions.
10. PowerView -- You may have heard of this under the name "Project Crescent" it is a fairly powerful self-service BI toolkit that allows users to create mash ups of BI reports from all over the Enterprise.
SQL 2012 is a big step forward for Microsoft -- the company is positioning itself to be a leader in availability and in the growing area of big data. As a database professional, I look forward to using SQL 2012 to bring new solutions to my clients.