I have never worked with 2 tables in a many-to-many relationship and could use
some help.
I have done some research and have the following understanding:
given:
table a
_id integer primary key,
a_data varchar(40);
table b
_id integer primary key,
b_data varchar(40);
I should define a 3rd table -
table a_b
aID integer not null,
bID integer not null;
where -
aID is the _id field from the "a" table
bID is the _id field from the "b" table
My questions are:
What would an "insert" statement look like that inserts data into table "a"
and table "b", gets the value of the "_id" fields of each table after the
insert, and inserts those 2 values into the a_b table?
Do I need a primary key field in the a_b table? If so, would it be a
combination of the (2) _id fields already present in that table.
If so, how do I specify that?
I will probably have other questions after I get these resolved, but having
these answered would be a great help to me to get started.
Thank you in advance to anyone wishing to respond.
-Chris
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