What is Primary index and Secondary indexes? What's the difference between them

Couchbase Server
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What is Primary index?
What is Secondary indexes?
Primary index can only be created in Web UI?
Can java do it? If so, is the effect the same? … :smiling_face_with_tear:

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primary index is on document key
secondary index is on document field

Both can be created via Web UI, SDks, curl

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Thanks~ but . The primary key .Like primary key in RDBMS ?
In CouchBase. primary key is option item. if not setting .When execute Query statement is or not fast?

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In Couchbase when ever u insert document you need to provide unique key and document value.
Primary key index is built on the unique document keys in the collection

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