Keyword Analysis & Research: what is a secondary key in a database

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
what is a secondary key in a database	1.13	1	4351	50	37
what	1.96	0.5	4221	17	4
is	1.64	0.4	9165	67	2
a	0.1	0.4	3701	62	1
secondary	1.88	1	2563	47	9
key	1.34	0.2	1672	5	3
in	1.09	0.4	8826	90	2
a	0.63	0.3	446	82	1
database	0.48	0.2	8009	92	8

Keyword	CPC	PCC	Volume	Score
what is a secondary key in a database	0.45	1	4198	69