X-Git-Url: http://koha-dev.rot13.org:8081/gitweb/?a=blobdiff_plain;f=installer%2Fdata%2Fmysql%2Fkohastructure.sql;h=d0ebda9520de34fd0e590fe0c3c90da871b41f2e;hb=a10402086b573c6b00dcb02f9ef9e83faccdbf82;hp=f8b3c71cc4012790ba5b1ed0e1b5180371f5f2e8;hpb=91b5a09c6cef398d9ad39ca1ced7d6569a87456b;p=koha_fer

diff --git a/installer/data/mysql/kohastructure.sql b/installer/data/mysql/kohastructure.sql
index f8b3c71cc4..d0ebda9520 100644
--- a/installer/data/mysql/kohastructure.sql
+++ b/installer/data/mysql/kohastructure.sql
@@ -328,11 +328,11 @@ CREATE TABLE `branch_item_rules` (
 --
 
 DROP TABLE IF EXISTS `branchcategories`;
-CREATE TABLE `branchcategories` ( -- information related to library/branch groups 
-  `categorycode` varchar(10) NOT NULL default '', -- unique key, used to identify the group
-  `categoryname` varchar(32), -- name used to identify the group
-  `codedescription` mediumtext, -- description of the group
-  `categorytype` varchar(16), -- defines if this is a search or properties group
+CREATE TABLE `branchcategories` ( -- information related to library/branch groups
+  `categorycode` varchar(10) NOT NULL default '', -- unique identifier for the library/branch group
+  `categoryname` varchar(32), -- name of the library/branch group
+  `codedescription` mediumtext, -- longer description of the library/branch group
+  `categorytype` varchar(16), -- says whether this is a search group or a properties group
   PRIMARY KEY  (`categorycode`)
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8;
 
@@ -367,9 +367,9 @@ CREATE TABLE `branches` ( -- information about your libraries or branches are st
 --
 
 DROP TABLE IF EXISTS `branchrelations`;
-CREATE TABLE `branchrelations` ( -- tracks which libraries/branches are in each library/branch group
-  `branchcode` varchar(10) NOT NULL default '', -- foreign key linking to the branches table
-  `categorycode` varchar(10) NOT NULL default '', -- foreign key linking to the branchcategories table
+CREATE TABLE `branchrelations` ( -- this table links libraries/branches to groups
+  `branchcode` varchar(10) NOT NULL default '', -- foreign key from the branches table to identify the branch
+  `categorycode` varchar(10) NOT NULL default '', -- foreign key from the branchcategories table to identify the group
   PRIMARY KEY  (`branchcode`,`categorycode`),
   KEY `branchcode` (`branchcode`),
   KEY `categorycode` (`categorycode`),
@@ -1051,13 +1051,13 @@ CREATE TABLE `items` (
 --
 
 DROP TABLE IF EXISTS `itemtypes`;
-CREATE TABLE `itemtypes` (
-  `itemtype` varchar(10) NOT NULL default '',
-  `description` mediumtext,
-  `rentalcharge` double(16,4) default NULL,
-  `notforloan` smallint(6) default NULL,
-  `imageurl` varchar(200) default NULL,
-  `summary` text,
+CREATE TABLE `itemtypes` ( -- defines the item types
+  `itemtype` varchar(10) NOT NULL default '', -- unique key, a code associated with the item type
+  `description` mediumtext, -- a plain text explanation of the item type
+  `rentalcharge` double(16,4) default NULL, -- the amount charged when this item is checked out/issued
+  `notforloan` smallint(6) default NULL, -- 1 if the item is not for loan, 0 if the item is available for loan
+  `imageurl` varchar(200) default NULL, -- URL for the item type icon
+  `summary` text, -- information from the summary field, may include HTML
   PRIMARY KEY  (`itemtype`),
   UNIQUE KEY `itemtype` (`itemtype`)
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8;
@@ -1700,17 +1700,17 @@ CREATE TABLE `special_holidays` (
 --
 
 DROP TABLE IF EXISTS `statistics`;
-CREATE TABLE `statistics` (
-  `datetime` datetime default NULL,
-  `branch` varchar(10) default NULL,
-  `proccode` varchar(4) default NULL,
-  `value` double(16,4) default NULL,
-  `type` varchar(16) default NULL,
+CREATE TABLE `statistics` ( -- information related to transactions (circulation and fines) in Koha
+  `datetime` datetime default NULL, -- date and time of the transaction
+  `branch` varchar(10) default NULL, -- foreign key, branch where the transaction occurred
+  `proccode` varchar(4) default NULL, -- proceedure code 
+  `value` double(16,4) default NULL, -- monetary value associated with the transaction
+  `type` varchar(16) default NULL, -- transaction type (locause, issue, return, renew, writeoff, payment, Credit*)
   `other` mediumtext,
   `usercode` varchar(10) default NULL,
-  `itemnumber` int(11) default NULL,
-  `itemtype` varchar(10) default NULL,
-  `borrowernumber` int(11) default NULL,
+  `itemnumber` int(11) default NULL, -- foreign key from the items table, links transaction to a specific item
+  `itemtype` varchar(10) default NULL, -- foreign key from the itemtypes table, links transaction to a specific item type
+  `borrowernumber` int(11) default NULL, -- foreign key from the borrowers table, links transaction to a specific borrower
   `associatedborrower` int(11) default NULL,
   KEY `timeidx` (`datetime`)
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8;