Data Modeling - Schema

About

A schema is a metadata that defines the structure of data.

Complex relational schemas are more difficult to scale due to the number of data consistency constraints that introduces extra locks.

Articles Related

Validation

See Data Validation (Schema Validation)

Schema Type

on read

schema on read:

• Data - Semi-Structured Data
• What is Unstructured data? known also as structure-later, schema-later or schema on read

on write

schema on write: What is Structured Data (known also as Schema before)?

Less

See:

• Data - Semi-Structured Data
• What is Unstructured data? known also as structure-later, schema-later or schema on read

Later

see:

• What is Unstructured data? known also as structure-later, schema-later or schema on read
• Data - Semi-Structured Data

Before

see What is Structured Data (known also as Schema before)?

Documentation / Reference

• Schema diff tool thread