Overview

This documentation defines Portex. It is a table-structed data definition language designed for both structed-data and unstructed-data.

Data Storage

Portex is designed for a table-structed data storage system, which has the following features:

• Strongly typed: The type of the data in each column MUST be the same

• Support storing the binary file

• Support storing nested table

Portex

Portex is a language for describing the data structure of the objects stored in the table. It defines the name and the type of each table column. It also tells the data user how to access the data in the table.

Portex is defined with JSON, this doc uses yaml to represent JSON objects for better legibility.

• Basic Syntax
• Nullable Type
• Primitive Types
  • boolean
  • binary
  • string
  • numeric types
• Complex Types
  • enum
  • record
  • array
• Temporal Types
  • date
  • time
  • timestamp
  • timedelta
• Type Import
  • How to build a schema package?
  • How to import types from a package?
• Template Type
  • Parameters
  • Parameter “exist_if”
  • Unpack Syntax