From J Wiki
Jump to navigation Jump to search
JDB: Layout Columns | Queries Σ | API: Structural Records | Client/Server | Implementation | Examples

JDB is a database where columns are mapped J nouns. Compared to a traditional RDBMS:

  • it is straightforward to read/write data from J
  • a task can add new records very efficiently by simply appending to the mapped nouns
  • record searches are very fast on large amounts of data

For an overview and summary of features, see JDB announcement.

Quick Start  - Information for users

Explore  - user documentation, see also the top navigation bar


  • Layout - database physical structure
  • Columns - data and special columns, foreign keys and data types
  • Queries - SQL query expressions
  • Aggregation - grouped queries

Programming Interface


  • Browser - database browser: schema, data, running queries
  • Graph - schema graphical diagram

Development  - Information for developers

Contributed by Chris Burke and Oleg Kobchenko