Primary_key

[Marcela Guerrero]

Has ArangoDb primary composed key?

[Kerry Hormann]

Yes, every document has two non-optional attributes:

• _key  -  ex: _key: "1234"
• _id  -  ex: _id: "myCollection/1234"

Both _id and _key are strings, and the value of _id is the collection name plus the _key, concatenated with a forward-slash.

All document collections have non-alterable indexes that cover these attributes.

All edge collections also have required properties:

• _from  -  ex: from: "myCollection/123"
• _to  -  ex: _to: "myCollection/abc"

All edge collections have non-alterable indexes that cover these attributes as well.

On Wed, Aug 26, 2020 at 12:31 PM Marcela Guerrero <marcelagu...@gmail.com> wrote:

Has ArangoDb primary composed key?

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[noel del rosario]

Hope the LINK below could do some help ....

https://www.arangodb.com/why-arangodb/sql-aql-comparison/