Technical

Chapters list
  • Technical documentation: Database Structure

  • ATLAS system database

    The ATLAS system database contains information about the different domains handled by a single ATLAS instillation, accounts, data and domain registrations.

  • ATLAS core database

    ATLAS stores the definitions of the web sites and text-mining functionality in a relation database. Each domain has a separate core ATLAS database, so that data from different domains is completely separated. This chapter describes the main database concepts used in the ATLAS core database.

  • File storage

    Files (attachments) in ATLAS are stored in a separate data store. Currently, we are using PostgreSQL database to manage the contents of the binary files.

  • Text mining relational data

    ATLAS stores the text mining annotations in a separate database. A PostgreSQL relational database is used for storing the unique annotations per languages.

  • Text mining Lucene storage

    The actual content of the text mining annotations is stored in high-performance Lucene indexes. This chapter describes the structure of a text mining index and the main queries run.