Over the past couple of years we have had a lot of information about Big Data presented to us. But one of the things that still stands out is that there is still a bit of confusion on what Big Data is. Depending on who you are talking to you will get a different definition and interpretation of what Big Data is and what you can do with it.
For example there is one company I know of who are talking about their Big Data project. For them this involves processing approx. 1 million records. That is Big for them. For others that is tiny.
Oracle has recently put together a series of articles that talk about what architectural changes are needed to your technical infrastructure to support Big Data. In this case it is more about the volume of data rather than different types of data. Although this is covered by the architecture that Oracle gives.
As part of the Oracle Enterprise Architecture section of the Oracle website, they have put together a series of articles on how you can include Big Data within your Enterprise Information Architecture.
These are a good read and a great place to get a better understanding of what you need to be considering as you move to an architecture that includes Big Data.