3.2 Summary of Classes

Now that we have described the categories of classes in DBTools.h++, we list the individual classes and their operations in Table 5:

Table 5 -- Summary of the DBTools.h++ classes

Class	Operation
*RWDBAssignment*	Represents the SQL `Set x = y` phrase
*RWDBBinaryVector*	Vector of data to be used with the bulk read and write classes
*RWDBBlob*	Stores Binary Large Objects
*RWDBBoundExpr*	Represents a placeholder in dynamic SQL statements
*RWDBBulkInserter*	Encapsulates the DBTools.h++ bulk write mechanism
*RWDBBulkReader*	Encapsulates the DBTools.h++ bulk read mechanism
*RWDBCollectableExpr*	SQL expression that can be placed in an *RWCollection*
*RWDBColumn*	References a specific column in a table
*RWDBCompoundSelector*	Created as the result of the set operations `UNION`, `INTERSECTION`, and `DIFFERENCE` on *RWDBSelector*
*RWDBConnection*	Represents a database connection
*RWDBCriterion*	Represents an SQL expression evaluated as a boolean
*RWDBCritFormDefinition*	Defines boolean SQL expressions using replacement text
*RWDBCritFuncDef{n}*	Defines boolean SQL expressions with `n` arguments
*RWDBCursor*	Represents a database cursor
*RWDBDatabase*	Represents a database
*RWDBDateTime*	Stores a date and time value
*RWDBDateVector*	Vector of data to be used with the bulk read and write classes
*RWDBDeleter*	Encapsulates the SQL `DELETE` statement
*RWDBDuration*	Stores a time period
*RWDBEnvironmentHandle*	Provides methods an application can use to set or retrieve database-vendor-specific connect time and configuration parameters
*RWDBExpr*	Codes SQL expressions using C++ syntax
*RWDBExprFormDefinition*	Defines SQL expressions using replacement text
*RWDBExprFuncDef{n}*	Defines SQL functions with `n` arguments
*RWDBForeignKey*	Encapsulates the SQL notion of foreign keys
*RWDBForeignKeyList*	Represents a list of foreign keys associated with a table
*RWDBInserter*	Encapsulates the SQL `INSERT` statement
*RWDBJoinExpr*	Defines SQL `JOIN` expressions for ANSI-compliant servers
*RWDBManager*	Provides database-dependent instances of *RWDBDatabase*
*RWDBMBString*	Stores a multibyte string
*RWDBMemTable*	Stores tabular data in memory
*RWDBMultiRow*	Adds row semantics to collections of *RWDBTBuffer*s
*RWDBNullIndicator*	Used to detect `NULL` values
*RWDBOSql*	Used to encapsulate an SQL statement.
*RWDBPhraseBook*	Standardizes SQL dialects
*RWDBReader*	Reads tabular data one row at a time
*RWDBResult*	Represents a sequence of 0 or more tables of results
*RWDBRow*	Stores a single row of data
*RWDBSchema*	Contains a list of column definitions
*RWDBSelector*	Encapsulates the SQL `SELECT` statement
*RWDBSelectorBase*	The base class for *RWDBSelector* and *RWDBCompoundSelector*. This class should be treated as a pure virtual base class.
*RWDBStatus*	Represents the status of an object or an operation
*RWDBStoredProc*	Represents a database stored procedure
*RWDBStringVector*	Vector of data to be used with the bulk read and write classes
*RWDBSystemHandle*	Provides access to the underlying vendor-specific database API
*RWDBTable*	Represents tabular data, including database tables and result sets
*RWDBTBuffer<T>*	Encapsulates buffers of data that can be bound to the SQL statement encapsulated by *RWDBOSql*
*RWDBTPtrMemTable<T,C>*	A template version of tabular data in memory
*RWDBTracer*	Provides runtime tracing
*RWDBUpdater*	Encapsulates the SQL `UPDATE` statement
*RWDBValue*	Normalizes database datatypes
*RWDBVector*	Vector of data to be used with the bulk read and write classes
*RWDecimalPortable*	Arbitrary precision-coded decimal data