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Table The table extension functionality allows inheriting fields from a parent table. Tables are extended by administrators and developers while creating tables.is available when creating a table record. It allows child tables to inherit the fields of the parent table. 

The table Table extension is used for a set of records to share information with each other.

In the following use case listed below, the Task table has multiple extensions:

An extended table is called a child table, and the original table is called a parent table. A child table, in its turn, can also be extended, i.e., a child table and can have child tables itself.

Table extending causes extension leads to the following:

• Cross-table linking between the A new table and the extending onean extended one are linked.
• System fields are created in the new table (like the sys_id for example, the ID field).

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All Tables dictionary

Instance administrators can use the All Tables tool to understand the relationships between the tables. To perform this, please Use the All Tables (sys_db_table) dictionary to understand relationships between tables. To do so, complete the steps below:

1. Navigate to System Definition → Settings → All Tables.
2. Select Find the table you want by typing its title in the search barrecord you need using the list search boxes or condition builder.
3. Navigate to this table.
4. The value in the Parent field is the title of the parent table, the one the current table is sharing fields with.