difference between Base Table and Core table

[arpitt]

What is the difference between Base Table and Core table ?

[Satya44]

Base Tables:

If a table is extended but itself is not extending another table, it is called base table.

Ex: Task table is both base and parent table.

Core table:

Core tables are created by service now and provided with the base system.

Ex: Task table is a core, parent, and Base table.

      Incident and User tables are few other core tables

[Rajendher2]

Tables that exist in the base system are called core tables.These are created by ServiceNow and provided with the base system. Custom tables are created by you (users).

Let's first understand the concept of base, parent and child classes. 

A table that exists another table is called a child class and the table it extends is called a parent class. 

Examples: 

1. Task[task] table  -> Child tables are Change Request, Incident and Problem tables

2. Configuration Item [cmdb_ci] -> Database, Hardware and Software tables

If a table is extended but itself is not extending another table is called Base class/table

Example:

The Task[task] table is such a table, making it both the base class (not extending another table), and a parent class (extended)

[Teresa Ruiz]

I only understood it when I got to this schema. 

A child table is extended from a parent table, that can itself be exteded as well from another parent table. But if the parent table does not extend from another (for example, TASK), it is a base table. 

Core tables are tables that exist in the base system, and they can be parent tables (f.e. TASK) or child tables (f.e. Incident).

I hope this helps as it did for me. Please check helpful if it does. 

[Community Alums]

What are the types of tables in ServiceNow and what are they?
Some are telling 3 types-Base, core, Custom
Some are telling 2 types-Base, Custom

kindly clarify

[Dr Atul G- LNG]

HI @Community Alums 

https://youtu.be/Yqpo9uoTtS4?si=4p-2LbpfrqjjEC11