> ## Documentation Index
> Fetch the complete documentation index at: https://docs.ocient.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Identifiers

export const Ocient = "Ocient®";

In the {Ocient} System, identifiers are lexical tokens that name specific entities in the database. For example, a table name is an identifier.

In most cases, you do not have to quote an identifier. However, the identifier must meet these two conditions:

* Start with a letter followed by zero or more letters, digits, or underscores.
* Must not be a reserved word. For the full list of reserved words, see [Reserved Words](/reserved-words).

If the identifier does not meet either of these conditions, then enclose the identifier in double quotes `""` to create a delimited identifier. SQL is case-insensitive, and the database normalizes identifiers to lowercase. For example, you must add double quotes to the `1start_with_digit`, `hy-phen`, and `mixedCase` identifiers so that the database can parse them correctly: `"1start_with_digit"`, `"hy-phen"`, and `"mixedCase"`.

The system uses identifiers to identify these objects:

* Database name
* Schema name
* Function name
* Table name
* Table alias name
* Column name
* Column alias name
* Index name
* View name
* Task name
* Node names
* Machine learning model name
* Connectivity pool name
* Connectivity pool participant name
* Storage space name
* Cluster name
* Service class name
* Single sign-on (SSO) protocol
* Tag name
* JSON key
* Username
* Group name
* Common table expression
* Subexpression name
* Data pipeline name
* Data pipeline type

## Related Links

[SQL Syntax Conventions](/sql-syntax-conventions)

[SQL Reference](/sql-reference)

[Machine Learning Model Functions](/machine-learning-model-functions)

[Connectivity Pools](/cluster-and-node-management#connectivity-pool)

[Users, Groups, and Service Classes](/users-groups-and-service-classes)