Data Modeling - What is a schema ?

Data System Architecture


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.


See Data Validation (Schema Validation)

Schema Type

on read

schema on read:

on write

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






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

Documentation / Reference

Discover More
Card Puncher Data Processing
Code - Grammar / Syntax (Lexical)

This section regroups the entity of a computer language from a lexical point of view. It's the same as Parts of the speech for a natural language. Grammars are useful models when designing software...
Card Puncher Data Processing
Computer - Memory (Physical memory)

Memory is synonymous with the term primary storage Technically, memory is not part of the CPU but is the memory that the processor (CPU) addresses on its bus. Memory is a storage device that stores information...
Data System Architecture
Data - Semi-Structured Data

With semi-structured data (as schema-later data), we apply a schema after we read the data. The data is semi structured because the unstructured data is first retrieved from a row. All NoSQL application...
Card Puncher Data Processing
Data Validation (Schema Validation)

Data Validation is: the first step in a data processing lifecycle but is also helpful in spam bot protection. To be able to validate, a schema must be available for the data been validated. The...
Data System Architecture
Database management system (DBMS)

A Database_management_systemDBMS is a set of software programs that controls the organization, storage, management, and retrieval of data. A database is a collection of permanently stored data used by...
Star Schema
Dimensional Data Modeling - Dimensional Schemas

This section is dimensional data modeling, That is the building of a cube (hypercube) A dimensional schema is a schema based on dimension. The dimensional schema can modeled: in a relational database...
Graph - Graph Model (Network Model)

for a graph. A graph data model is also known as a Network model The schema is composed: entity (object type) are nodes relationship (types) are [[edge|arcs (egde) The property graph contains:...
GraphQL - Schema (Type)

GraphQl defines a schema (type). The implementation graphql/graphql-js/tree/master/src/typegraphql/type module is the engine for defining GraphQL types and schema. The below type is a shorthand notation....

The DTD of HTML can be found in the specification documents. It defines the schema of a valid HTML page. For instance html401
Javascript Object - Schema

in Javascript Object schema validation - check schema validity - - Yup is a JavaScript schema builder for value parsing and validation. Define a schema, transform...

Share this page:
Follow us:
Task Runner