Data Modeling Tools: What to Learn?
Data  modeling tools are the only way through which we can create powerful data  models. Following are the various options that we have to know and learn in data  modeling tools before start building data models.
Software:
» How  to install the data modeling tool on server/client? 
Logical Data Model:
»  How to create entity and add definition, business rule?
» How to create domains?
» How to  create an attribute and add definition, business rule, validation rules like  default    values and check constraint?
» How to  create supertypes, subtypes?
» How to create primary  keys, unique constraint, foreign key relationships, and recursive     relationships?
» How to create identifying and  non-identifying relationship?
» How to assign  relationship cardinality?
» How to phrase relationship  connecting two tables?
» How to assign role  names?
» How to create key groups?
» How to create sequence no's?
Physical Data Model:
»  How to rename a table?
» How to rename a  column,validation rules like default and check constraints?
»  How to assign NULL and NOT NULL to columns?
»  How to name foreign key constraints?
» How to  connect to databases like MS Access, Oracle, Sibase, Terradata etc?
» How to generate sql code from data model to run against  databases like MS Access,    Oracle, Sibase, Terradata etc.?
» How to create a data model from an existing database like MS  Access, Oracle, Sibase,    Terradata etc.?
» How to  add database related properties to tables, indexes?
»  How to check different versions of the data model?
» How many data modelers can concurrently work on the same version of a data model?
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