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quiz/questions: Improve documentation of database tables.

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tjhunt 2009-03-05 11:24:41 +00:00
parent 790524a32e
commit 26574bbad7
6 changed files with 93 additions and 81 deletions
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21
question/type/numerical/db/install.xml
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@ -1,12 +1,15 @@
<?xml version="1.0" encoding="UTF-8" ?>
<XMLDB PATH="question/type/numerical/db" VERSION="20060812" COMMENT="XMLDB file for Moodle question/type/numerical">
<XMLDB PATH="question/type/numerical/db" VERSION="20060812" COMMENT="XMLDB file for Moodle question/type/numerical"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:noNamespaceSchemaLocation="../../../../lib/xmldb/xmldb.xsd"
>
<TABLES>
<TABLE NAME="question_numerical" COMMENT="Options for numerical questions" NEXT="question_numerical_units">
<TABLE NAME="question_numerical" COMMENT="Options for numerical questions." NEXT="question_numerical_units">
<FIELDS>
<FIELD NAME="id" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" SEQUENCE="true" ENUM="false" NEXT="question"/>
<FIELD NAME="question" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="id" NEXT="answer"/>
<FIELD NAME="answer" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="question" NEXT="tolerance"/>
<FIELD NAME="tolerance" TYPE="char" LENGTH="255" NOTNULL="true" DEFAULT="0.0" SEQUENCE="false" ENUM="false" PREVIOUS="answer"/>
<FIELD NAME="question" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" DEFAULT="0" SEQUENCE="false" ENUM="false" COMMENT="Redundant, because of the answer field. Foreign key references question.id." PREVIOUS="id" NEXT="answer"/>
<FIELD NAME="answer" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" DEFAULT="0" SEQUENCE="false" ENUM="false" COMMENT="Foreign key references question_answers.id." PREVIOUS="question" NEXT="tolerance"/>
<FIELD NAME="tolerance" TYPE="char" LENGTH="255" NOTNULL="true" DEFAULT="0.0" SEQUENCE="false" ENUM="false" COMMENT="Allowed error when matching a response to this answer. I don't know why this is stored as a string." PREVIOUS="answer"/>
</FIELDS>
<KEYS>
<KEY NAME="primary" TYPE="primary" FIELDS="id" NEXT="question"/>
@ -16,12 +19,12 @@
<INDEX NAME="answer" UNIQUE="false" FIELDS="answer"/>
</INDEXES>
</TABLE>
<TABLE NAME="question_numerical_units" COMMENT="Optional unit options for numerical questions" PREVIOUS="question_numerical">
<TABLE NAME="question_numerical_units" COMMENT="Optional unit options for numerical questions. This table is also used by the calculated question type." PREVIOUS="question_numerical">
<FIELDS>
<FIELD NAME="id" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" SEQUENCE="true" ENUM="false" NEXT="question"/>
<FIELD NAME="question" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="id" NEXT="multiplier"/>
<FIELD NAME="multiplier" TYPE="number" LENGTH="40" NOTNULL="true" UNSIGNED="false" DEFAULT="1.00000000000000000000" SEQUENCE="false" ENUM="false" DECIMALS="20" PREVIOUS="question" NEXT="unit"/>
<FIELD NAME="unit" TYPE="char" LENGTH="50" NOTNULL="true" SEQUENCE="false" ENUM="false" PREVIOUS="multiplier"/>
<FIELD NAME="question" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" DEFAULT="0" SEQUENCE="false" ENUM="false" COMMENT="Foreign key references question.id" PREVIOUS="id" NEXT="multiplier"/>
<FIELD NAME="multiplier" TYPE="number" LENGTH="40" NOTNULL="true" UNSIGNED="false" DEFAULT="1.00000000000000000000" SEQUENCE="false" ENUM="false" DECIMALS="20" COMMENT="The multiplier for this unit. For example, if the first unit is (1.0, 'cm'), another unit might be (0.1, 'mm') or (100.0, 'm')." PREVIOUS="question" NEXT="unit"/>
<FIELD NAME="unit" TYPE="char" LENGTH="50" NOTNULL="true" SEQUENCE="false" ENUM="false" COMMENT="The unit. For example 'm' or 'kg'." PREVIOUS="multiplier"/>
</FIELDS>
<KEYS>
<KEY NAME="primary" TYPE="primary" FIELDS="id" NEXT="question"/>