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authorBoris Kolpackov <boris@codesynthesis.com>2011-04-26 09:17:15 +0200
committerBoris Kolpackov <boris@codesynthesis.com>2011-04-26 09:17:15 +0200
commit6ae5df8a85cd0344cc12effe788f7e09d06df372 (patch)
treefef101ef0ab4c83dff84370e12640f900101e806 /boost/README
parente159da71e25aa50fc73479f9aa7aef7185c28a1c (diff)
Add note on embedded schemas
Diffstat (limited to 'boost/README')
-rw-r--r--boost/README12
1 files changed, 7 insertions, 5 deletions
diff --git a/boost/README b/boost/README
index c731bad..021d601 100644
--- a/boost/README
+++ b/boost/README
@@ -15,7 +15,7 @@ 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.
@@ -40,16 +40,18 @@ 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' and 'employer' objects and
persists them in the database. The next transaction loads all the employees
of a particular employer using the employee-employer relationship. Finally,
- the driver performs a database query which uses a data member of the Boost
+ the driver performs a database query which uses a data member of the Boost
gregorian::date type 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