Database suggestion (and possible readings) for heavy computational website -

Database suggestion (and possible readings) for heavy computational website -

i'm building website rely on heavy computations create guess , suggestion on objects of objects (considering user preferences , of users similar profiles). right i'm using mongodb projects, suppose i'll have go sql one.

unfortunately knowledge on subject high school level. know there lot of relational databases, , wondering have been of appropriate kind of heavily dynamic cluster analysis. appreciate suggestion regarding possible readings (would nice if free , online, won't mind reading book. maybe not 1k pages 1 if possible).

thanks help, extremely appreciated.

recommondations typically graph problem, should consider looking graph databases, e.g. neo4j

database website computation