I have this sentence:
Each of the datasets HapMap 6 and CEU HapMap 610 is stored in two schemas.
Background: a schema is a namespace within a database. Possible variations include:
[Each of/Both] the datasets HapMap 6 and CEU HapMap 610 [is/are] stored in two schemas.
Each means I am referring to the databases separately. Both means I am referring to them together. I don't have strong reasons for preferring one of these over the other. I'm leaning towards each but without a strong reason. I would be glad to hear of strong reasons to prefer one.
As far as are vs. is, I think is goes with each because each is singular. Both is plural, so that should go with are. Is that correct?
On a side note, is there any reason to prefer "the datasets HapMap 6 and CEU HapMap 610" to "the HapMap 6 and CEU HapMap 610 datasets"?