+A database contains a collection of tables. A table
+contains a set of rows. A row contains a set of columns.
+Every row in a table conforms to a structure described by the table's column
+set. Each column has attributes such as a name, a type, a maximum
+length, etc. Column types include every type of integer, real, date-time and
+text supported by the Symbian platform. In addition, a long binary
+column (sometimes known as BLOBs) may be written using the stream interface,
+allowing stream-aware components to use a database column for persistence.
+Auto-increment columns support automatic key or id generation. Column names
+within a single table must be unique, and follow the rules for DBMS names.
+A column definition is encapsulated by the TDbCol class,
+and the set of columns which describes the table in the CDbColSet class.
+Every index in a database is defined by its key,
+represented by the CDbKey class. Tables can index certain
+columns to sort their rows into a particular order, or provide fast key-based
+access to their rows. A key has attributes such as being unique or primary,
+a comparison specification for text columns, and a list of columns which make
+up the key, the TDbKeyCol class.
+See also:
+
+