Security needs to be the first and foremost concern when deploying In-memory tools as they expose huge amounts of data to end users. Care should be taken as to who has access to the data, how and where data is stored. End users download huge amounts of data onto their desktops and there is danger of data getting compromised. It could get lost or stolen. Measures should be taken to provide access to the data only to authorized users.<ref>{{cite web|title=In_memory Analytics|url=http://www.yellowfinbi.com/Document.i4?DocumentId=104879|publisher=yellowfin|pages=12}}</ref>
== In-memory market Vendors ==
In-memory processing became widely commercially available when introduced by [[QlikTech]] in 1997 with their business intelligence product QlikView, although in-memory technology in general was developed much earlier. Since lower costs are one of the benefits of in-memory processing when the dataset to be analysed is relatively small, many organizations are looking to adopt this technology and many vendors have since added in-memory to their platforms. Biggies like SAP recently unveiled High-Performance Analytical Appliance (HANA) for in-memory computing, Oracle acquired [[TimesTen]], an in-memory relational database. IBM Cognos (formerly Applix TM1) offers financial application and have many financial institutions as customers. Products such as Spotfire acquired by TIBCO, IBM SolidDB are already popular and have made their mark.<ref>{{cite journal|last=Henschen|first=Doug|title=Next-Gen BI Is Here|journal=Information Week|date=31|year=2009|month=August|issue=1239|pages=6|url=http://www.businessintelligence.info/docs/revistas/bispain_tendencias_business_intelligence.pdf}}</ref>
Another solution, SiSense's Prism software, uses elastic in-memory processing combined with a columnar data store (see [[Column-oriented DBMS]]). The column-oriented database allows for faster queries; joins are completed in RAM using algebraic arguments, as opposed to the traditional table join of an [[RDBMS]]. Only a small fraction of a data set is held in RAM at any given moment.<ref>{{cite web|last=Israeli|first=Elad|title=In-Memory BI is not the Future|publisher=The Elasticube Chronicles|pages=6|url=http://elasticube.blogspot.com/2010/09/in-memory-bi-is-not-future-its-past.html}}</ref>
