The ICD along with other technical documents are provided here. This username is distributed when you apply for an account. This is the password you use if you run BuildCrestClient to install Release 3.6. The Card Catalog is a collection of Holdings that represent electronically stored data. A holding is a description of data, but not the data itself.
Holdings can contain unlimited types of data.
The holding may have a virtually unlimited number of entries, and does not need to conform to a known set of tags.