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--- stats:schema [2011/09/28 20:16] – [Structure and Integrity Constraints] Patrick Michel
+++ stats:schema [2011/10/13 23:17] (current) – [Structure and Integrity Constraints] Patrick Michel
@@ Line 1: / Line 1: @@
 ====== XCend Schema ======
-This is the underlying [[:start]] Schema of the whole [[:stats:start]]. Everything //persistent// is represented in the schema. The schema directly splits into the three main groups [[:stats:schema:account]], [[:stats:schema:exam]] and [[:stats:schema:exercise]].
+This is the underlying [[:start]] Schema of the whole [[:stats:start]]. Everything //persistent// is represented in the schema. The schema's top level element is [[:stats:schema:stats]], but it directly splits into the three main groups
+  * [[:stats:schema:account]]
+  * [[:stats:schema:exam]]
+  * [[:stats:schema:exercise]].
 ===== Structure and Integrity Constraints =====
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 <code xcend>
 element stats {
+  attribute revision { integer }
 </code>
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 This section lists all atomic //manipulations// associated with the schema.
+==== Associated to the Stat System ====
+These are the associated procedures for [[:stats:schema:stats]], i.e. they have no necessary parameters, as the [[:stats:]] is unique and does not need disambiguation. Some of them, however, will have ''ident'' parameters, which makes it possible to offer them in these classes, too.
+{{page>:stats:schema:stats#Procedures&doindent&noheader&nofooter}}
 ==== Associated to Account ====
@@ Line 39: / Line 50: @@
 {{page>:stats:schema:exercise#Procedures&doindent&noheader&nofooter}}
+==== Associated to Group ====
+These are the associated procedures for [[:stats:schema:group]], i.e. they have two parameters for the exercise id and the group id. They will also most likely be offered in a corresponding ''Group'' class in an OO setting, which has an associated ''Exercise'' object.
+{{page>:stats:schema:group#Procedures&doindent&noheader&nofooter}}
+==== Associated to Student ====
+These are the associated procedures for [[:stats:schema:student]], i.e. they have two parameters for the exercise id and the student id. They will also most likely be offered in a corresponding ''Student'' class in an OO setting, which has an associated ''Exercise'' object.
+{{page>:stats:schema:student#Procedures&doindent&noheader&nofooter}}