Previous Next JavaScript must be enabled to correctly display this content

## Constraints

There is a limitation on the length of the name of the table or index that you want to create.

Table 1-1 Constraints on the length and content

Description | Constraints on the length | Constraints on the content
--- | --- | ---
table name | 256 | Must contain only alphanumeric characters or "_" and must start with an alphabetic character
namespace name | 128 | Must contain only alphanumeric characters or "_" and must start with an alphabetic character
field name | 64 | No constraints
secondary-index name | 64 | Must contain only alphanumeric characters or "_" and must start with an alphabetic character
text-index name | 64 | Must contain only alphanumeric characters or "_" and must start with an alphabetic character
region-name | 128 | Must contain only alphanumeric characters or "_" and must start with an alphabetic character