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Extensible Markup Language  |  2002-01-24  |  10.0 KB  |  73 lines
  1. <?xml version="1.0" encoding="utf-8"?>
  2. <html><head><title>Relations</title><meta name="filename" content="text/common/explorer/database/05020100"/><meta name="language" content="en-US"/><help:css-file-link xmlns:help="http://openoffice.org/2000/help"/><!--The CSS style header method for setting styles--><style type="text/css">
  3.  
  4.         table.Tabelle1{
  5.                 }
  6.         span.Tabelle1A{
  7.                 width:1.499cm;}
  8.         span.Tabelle1B{
  9.                 width:16.498cm;}
  10.         tr.Tabelle11{
  11.                 }
  12.         td.Tabelle1A1{
  13.                 }
  14.         table.Tabelle2{
  15.                 }
  16.         span.Tabelle2A{
  17.                 width:1.499cm;}
  18.         span.Tabelle2B{
  19.                 width:16.498cm;}
  20.         tr.Tabelle21{
  21.                 }
  22.         td.Tabelle2A1{
  23.                 }
  24.         p.P1{
  25.                 }
  26.         span.T1{
  27.                 font-weight:bold;}
  28.         span.fr1{
  29.                 }
  30.         </style></head><body>
  31.    
  32.    
  33.    <p class="P1"/>
  34.    <p class="Head1"><help:help-id value="OFFMGR_MODALDIALOG_DLG_REL_PROPERTIES" xmlns:help="http://openoffice.org/2000/help"/><help:help-id value="SID_SBA_ADD_RELATION" xmlns:help="http://openoffice.org/2000/help"/>Relations</p>
  35.    <p class="Paragraph"><help:key-word value="relations; properties" tag="kw66181_2" xmlns:help="http://openoffice.org/2000/help"/><help:key-word value="key fields; editing" tag="kw66181_4" xmlns:help="http://openoffice.org/2000/help"/><help:help-text value="visible" xmlns:help="http://openoffice.org/2000/help">This is where you define a relation between two tables.</help:help-text></p>
  36.    <help:popup Id="67813" Eid="dialogrelationen" xmlns:help="http://openoffice.org/2000/help"><help:embedded Id="65598" Eid="wie"/></help:popup>
  37.    <table><tr class="Tabelle11"><th class="Tabelle1A1" style="text-align:left;"><span class="Tabelle1A">
  38.        <p class="Paragraph"><draw:image draw:style-name="fr1" draw:name="HIND_1" text:anchor-type="paragraph" svg:width="0.847cm" svg:height="0.847cm" draw:z-index="1" xlink:href="65980" xlink:type="simple" xlink:show="embed" xlink:actuate="onLoad" draw:filter-name="GIF - Graphics Interchange" xmlns:draw="http://openoffice.org/2000/drawing" xmlns:text="http://openoffice.org/2000/text" xmlns:svg="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"/></p>
  39.       </span></th><th class="Tabelle1A1" style="text-align:left;"><span class="Tabelle1B">
  40.        <p class="Paragraph">These update and delete options are only available if they are supported by the database used.</p>
  41.       </span></th></tr></table>
  42.    <p class="Head2"><help:help-id value="OFFMGR_LISTBOX_DLG_REL_PROPERTIES_LB_LEFT_TABLE" xmlns:help="http://openoffice.org/2000/help"/><help:help-id value="OFFMGR_LISTBOX_DLG_REL_PROPERTIES_LB_RIGHT_TABLE" xmlns:help="http://openoffice.org/2000/help"/><help:help-id value="DBACCESS_LISTBOX_DLG_REL_PROPERTIES_LB_LEFT_TABLE" xmlns:help="http://openoffice.org/2000/help"/><help:help-id value="DBACCESS_LISTBOX_DLG_REL_PROPERTIES_LB_RIGHT_TABLE" xmlns:help="http://openoffice.org/2000/help"/>Tables</p>
  43.    <p class="Paragraph"><help:help-text value="hide" xmlns:help="http://openoffice.org/2000/help">This is where the two related tables are listed.</help:help-text>If you create a new relation, you can select one table from each of the combo boxes in the top part of the dialog.</p>
  44.    <p class="Paragraph">If you displayed the <span class="T1">Relations</span> dialog for an existing relation by double-clicking the connection lines in the Relation window, then the tables involved in the relation cannot be modified here.</p>
  45.    <p class="Head2"><help:help-id value="HID_RELDLG_KEYFIELDS" xmlns:help="http://openoffice.org/2000/help"/><help:key-word value="key fields" tag="kw66181_3" xmlns:help="http://openoffice.org/2000/help"/>Key fields</p>
  46.    <p class="Paragraph"><help:help-text value="visible" xmlns:help="http://openoffice.org/2000/help">This is where you define key fields for the relation.</help:help-text></p>
  47.    <p class="Paragraph"><help:help-id value="HID_RELATIONDIALOG_LEFTFIELDCELL" xmlns:help="http://openoffice.org/2000/help"/><help:help-id value="HID_RELATIONDIALOG_RIGHTFIELDCELL" xmlns:help="http://openoffice.org/2000/help"/><help:help-text value="visible" xmlns:help="http://openoffice.org/2000/help">The names of the tables selected for the link appear here as column names.</help:help-text> If you click a field, then you can use the arrow buttons to select a field of the table. Each relation is written in a row.</p>
  48.    <p class="Head2">Update options</p>
  49.    <p class="Paragraph">Here you can set preferences that will take effect for changes to a primary key field.</p>
  50.    <p class="Head3"><help:help-id value="OFFMGR_RADIOBUTTON_DLG_REL_PROPERTIES_RB_NO_CASC_UPD" xmlns:help="http://openoffice.org/2000/help"/><help:help-id value="DBACCESS_RADIOBUTTON_DLG_REL_PROPERTIES_RB_NO_CASC_UPD" xmlns:help="http://openoffice.org/2000/help"/>No Action</p>
  51.    <p class="Paragraph"><help:help-text value="visible" xmlns:help="http://openoffice.org/2000/help">If you select this option, any change made to a primary key does not affect other external key fields.</help:help-text></p>
  52.    <p class="Head3"><help:help-id value="OFFMGR_RADIOBUTTON_DLG_REL_PROPERTIES_RB_CASC_UPD" xmlns:help="http://openoffice.org/2000/help"/><help:help-id value="DBACCESS_RADIOBUTTON_DLG_REL_PROPERTIES_RB_CASC_UPD" xmlns:help="http://openoffice.org/2000/help"/>Updating cascade</p>
  53.    <p class="Paragraph"><help:help-text value="visible" xmlns:help="http://openoffice.org/2000/help">Select this option to update all the external key fields if the value of the corresponding primary key has been modified (<help:key-word value="Cascading Update" tag="kw66181_1"/>Cascading Update).</help:help-text></p>
  54.    <p class="Head3"><help:help-id value="OFFMGR_RADIOBUTTON_DLG_REL_PROPERTIES_RB_CASC_UPD_NULL" xmlns:help="http://openoffice.org/2000/help"/><help:help-id value="DBACCESS_RADIOBUTTON_DLG_REL_PROPERTIES_RB_CASC_UPD_NULL" xmlns:help="http://openoffice.org/2000/help"/>Set Null</p>
  55.    <p class="Paragraph"><help:help-text value="visible" xmlns:help="http://openoffice.org/2000/help"> If the corresponding primary key has been modified, use this option to set the "IS NULL" value to all external key fields. IS NULL means that the field is empty.</help:help-text></p>
  56.    <p class="Head3"><help:help-id value="OFFMGR_RADIOBUTTON_DLG_REL_PROPERTIES_RB_CASC_UPD_DEFAULT" xmlns:help="http://openoffice.org/2000/help"/><help:help-id value="DBACCESS_RADIOBUTTON_DLG_REL_PROPERTIES_RB_CASC_UPD_DEFAULT" xmlns:help="http://openoffice.org/2000/help"/>Set Default</p>
  57.    <p class="Paragraph"><help:help-text value="visible" xmlns:help="http://openoffice.org/2000/help"> If the corresponding primary key has been <text:s text:c="" xmlns:text="http://openoffice.org/2000/text"/>modified, use this option to set a default value to all external key fields.</help:help-text> During the creation of the corresponding table, the default value of an external key field will be defined when you assign the field properties.</p>
  58.    <p class="Head2">Delete options</p>
  59.    <p class="Paragraph">Here you can selection options that will take effect when a primary key field is deleted.</p>
  60.    <p class="Head3"><help:help-id value="OFFMGR_RADIOBUTTON_DLG_REL_PROPERTIES_RB_NO_CASC_DEL" xmlns:help="http://openoffice.org/2000/help"/><help:help-id value="DBACCESS_RADIOBUTTON_DLG_REL_PROPERTIES_RB_NO_CASC_DEL" xmlns:help="http://openoffice.org/2000/help"/>No Action</p>
  61.    <p class="Paragraph"><help:help-text value="visible" xmlns:help="http://openoffice.org/2000/help">With this option, the deletion of a primary key will not have any effect on other external key fields.</help:help-text></p>
  62.    <p class="Head3"><help:help-id value="OFFMGR_RADIOBUTTON_DLG_REL_PROPERTIES_RB_CASC_DEL" xmlns:help="http://openoffice.org/2000/help"/><help:help-id value="DBACCESS_RADIOBUTTON_DLG_REL_PROPERTIES_RB_CASC_DEL" xmlns:help="http://openoffice.org/2000/help"/>Delete cascade</p>
  63.    <p class="Paragraph"><help:help-text value="visible" xmlns:help="http://openoffice.org/2000/help">With this option, all external key fields will be deleted if you delete the corresponding primary key field.</help:help-text></p>
  64.    <table><tr class="Tabelle21"><th class="Tabelle2A1" style="text-align:left;"><span class="Tabelle2A">
  65.        <p class="Paragraph"><draw:image draw:style-name="fr1" draw:name="HIND_2" text:anchor-type="paragraph" svg:width="0.847cm" svg:height="0.847cm" draw:z-index="0" xlink:href="65640" xlink:type="simple" xlink:show="embed" xlink:actuate="onLoad" draw:filter-name="GIF - Graphics Interchange" xmlns:draw="http://openoffice.org/2000/drawing" xmlns:text="http://openoffice.org/2000/text" xmlns:svg="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"/></p>
  66.       </span></th><th class="Tabelle2A1" style="text-align:left;"><span class="Tabelle2B">
  67.        <p class="Paragraph">Note that when you delete a primary key field with this option, all records of other tables that have this key as their foreign key are also deleted. Use this option with great care; in the worst case scenario, a major portion of the database could be deleted!</p>
  68.       </span></th></tr></table>
  69.    <p class="Head3"><help:help-id value="OFFMGR_RADIOBUTTON_DLG_REL_PROPERTIES_RB_CASC_DEL_NULL" xmlns:help="http://openoffice.org/2000/help"/><help:help-id value="DBACCESS_RADIOBUTTON_DLG_REL_PROPERTIES_RB_CASC_DEL_NULL" xmlns:help="http://openoffice.org/2000/help"/>Set Null</p>
  70.    <p class="Paragraph"><help:help-text value="visible" xmlns:help="http://openoffice.org/2000/help">With this option, <text:s text:c="" xmlns:text="http://openoffice.org/2000/text"/>if you delete the corresponding primary key, the "IS NULL" value will be assigned to all external key fields.</help:help-text></p>
  71.    <p class="Head3"><help:help-id value="OFFMGR_RADIOBUTTON_DLG_REL_PROPERTIES_RB_CASC_DEL_DEFAULT" xmlns:help="http://openoffice.org/2000/help"/><help:help-id value="DBACCESS_RADIOBUTTON_DLG_REL_PROPERTIES_RB_CASC_DEL_DEFAULT" xmlns:help="http://openoffice.org/2000/help"/>Set Default</p>
  72.    <p class="Paragraph"><help:help-text value="visible" xmlns:help="http://openoffice.org/2000/help">With this option, <text:s text:c="" xmlns:text="http://openoffice.org/2000/text"/>if you delete the corresponding primary key, a set value will be set to all external key fields.</help:help-text></p>
  73.   </body></html>