Table of Contents
The following discussion assumes you know SQL database concepts. If you do not, please consult a source such as wikipedia.org before reading this section.
Integers, floating point values, strings, std::tm
objects, and binary data (also known as blobs) are treated by the
library as "native SQL types", meaning that each type corresponds to a
specific SQL type in any column of a database table. For example,
integers (char, short, int,
long, long long and the
variants) are all mapped to the SQL INTEGER type.
Similarly, floating point values are mapped to the SQL REAL
type, strings are mapped to the SQL TEXT type,
std::tm objects are mapped to the SQL DATETIME
type, and blobs are mapped to the SQL BINARY/BLOB type. All
other object types are handled as "non native SQL types" and result in
separate tables being created to store each different object
See the "Serializing binary data" section for a list of what the library considers to be a blob "out of the box". As well, clients can also define their own blob types - see the section "Serializing binary data" below for information on how to do this.