diff options
Diffstat (limited to 'relationship')
| -rw-r--r-- | relationship/README | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/relationship/README b/relationship/README index 6400960..f3e4e9c 100644 --- a/relationship/README +++ b/relationship/README @@ -1,7 +1,7 @@ This example shows how to declare and use unidirectional to-one and to-many -relationships between persistent objects. +relationships between persistent objects. -The example uses the shared_ptr smart pointer from TR1 and requires a C++ +The example uses the shared_ptr smart pointer from TR1 and requires a C++ compiler with TR1 support or an external TR1 implementation, such as the one provided by Boost. @@ -14,7 +14,7 @@ employee.hxx employee-odb.hxx employee-odb.ixx -employee-odb.cxx +employee-odb.cxx employee.sql The first three files contain the database support code and the last file contains the database schema for the employee.hxx header. @@ -40,7 +40,7 @@ driver.cxx headers to gain access to the persistent classes and their database support code. It also includes database.hxx for the create_database() function declaration. - + In main() the driver first calls create_database() to obtain the database instance. It then creates a number of 'employee', 'employer', and 'project' objects, sets the relationships between them, and persists them in the @@ -49,8 +49,10 @@ driver.cxx driver performs a database query which uses a data member from a related object in its criterion. -To run the example we first need to create the database schema. Using MySQL -as an example, this can be achieved with the following command: +To run the example we may first need to create the database schema (for some +database systems, such as SQLite, the schema is embedded into the generated +code which makes this step unnecessary). Using MySQL as an example, this +can be achieved with the following command: mysql --user=odb_test --database=odb_test < employee.sql |