| Cursor | 
 A cursor that reads progressively rows from the database, it is useful for reading very large result sets. 
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| Pool | 
 A connection pool which reuses a number of SQL connections. 
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| PreparedQuery<T> | 
 A query for a prepared statement allowing parameterized execution of the query, this query will use
 a prepared statement. 
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| PreparedStatement | 
 A prepared statement, the statement is pre-compiled and it's more efficient to execute the statement for multiple times. 
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| PropertyKind<T> | 
The kind of the property, this can be used to fetch some specific property of the  execution result.  
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| Query<T> | 
 A query. 
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| Row | 
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| RowIterator<R> | 
 An iterator for processing rows. 
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| RowSet<R> | 
 The execution result of the row set of a query provided as , commonly used as a RowSet|
 . 
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| RowStream<T> | 
 A row oriented stream. 
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| SqlClient | 
 Defines common SQL client operations with a database server. 
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| SqlClientHelper | 
Utilities for generating  Multi and  Uni with a  SqlClient.  
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| SqlConnection | 
 A connection to the database server. 
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| SqlResult<T> | 
 An interface that represents the execution result of an operation on the database server. 
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| Transaction | 
 A transaction. 
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| Tuple | 
 A general purpose tuple. 
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