1. A computer system providing taxonomy for enterprise data management and analysis, the system comprising: interface to a computer network, said computer network including data stored in devices attached to it; means to access said data; metadata extraction means; metadata repository; full text search engine of the data; index repository; classification means to classify said data, wherein said classification means are applied to extracted metadata and wherein said classification means are applied to the result of full text search; means to create data management policies, each said data management policy including one or more actions to be performed on data, wherein said actions include: modify data read/write and access permissions; encrypt data; retain data; ensure data security; ensure data protection; means to apply a data management policy to classified data; means to create a hierarchy of enterprise data management taxonomy nodes, wherein each of said nodes includes: classification criteria used by said classification means to classify data belonging to the preceding node in the taxonomy; and classified data created by said classification means using said classification criteria; number of classified documents; wherein one or more of said nodes include a data management policy and wherein at each node that includes a data management policy, said management policy is applied to data included in said each node.
9. The system of claim 1 , further comprising means to define a plurality of themes represented in an enterprise data, wherein for each theme, a taxonomy is built by classifying data related to the theme and wherein said taxonomy includes data related to the theme of the taxonomy.