1051. data format
      Anything to do with data formats
1052. Data formats
      Anything to do with various file and data formats
1053. data structure
      Various data structures
1054. data-lens
      This library provides a language for expressing data manipulations as the composition of more primitive operations
1055. data-table
      data-table is a library providing a data structure that has rows of data and column names and types (ie database results)
1056. Database
      Database-related software; RDBMS glue, OO databases, etc
1057. database-migrations
      database-migrations is a library for handling relational (SQL) schema changes and versioning, much like Ruby on Rails migrations
1058. Dataflow
      cells - cells is a dataflow extension to CLOS (think spreadsheet-type programming, with slots being spreadsheet cells) by Kenny Tilton cl-flow - Asynchronous non-blocking concurrency in Common Lisp, similar to what green threads are for CL-REACTIVE - Reactive programming at the variable/function level for Common Lisp computed-class - A class metaobject for computed slot values and more gecol - gecol provides bindings to GECODE in order to enjoy constraint programming in Lisp
1059. datafly
      A lightweight database library for Common Lisp
1060. DataMiningTools Lisp slides
      DataMiningTools is an online education company that has produced a set of freely-viewable introductory slides on Common Lisp:

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