<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >pg_shadow</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK REV="MADE" HREF="mailto:pgsql-docs@postgresql.org"><LINK REL="HOME" TITLE="PostgreSQL 8.0.11 Documentation" HREF="index.html"><LINK REL="UP" TITLE="System Catalogs" HREF="catalogs.html"><LINK REL="PREVIOUS" TITLE="pg_rewrite" HREF="catalog-pg-rewrite.html"><LINK REL="NEXT" TITLE="pg_statistic" HREF="catalog-pg-statistic.html"><LINK REL="STYLESHEET" TYPE="text/css" HREF="stylesheet.css"><META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=ISO-8859-1"><META NAME="creation" CONTENT="2007-02-02T03:57:22"></HEAD ><BODY CLASS="SECT1" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="5" ALIGN="center" VALIGN="bottom" >PostgreSQL 8.0.11 Documentation</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="top" ><A HREF="catalog-pg-rewrite.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="10%" ALIGN="left" VALIGN="top" ><A HREF="catalogs.html" >Fast Backward</A ></TD ><TD WIDTH="60%" ALIGN="center" VALIGN="bottom" >Chapter 41. System Catalogs</TD ><TD WIDTH="10%" ALIGN="right" VALIGN="top" ><A HREF="catalogs.html" >Fast Forward</A ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="top" ><A HREF="catalog-pg-statistic.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><DIV CLASS="SECT1" ><H1 CLASS="SECT1" ><A NAME="CATALOG-PG-SHADOW" >41.26. <TT CLASS="STRUCTNAME" >pg_shadow</TT ></A ></H1 ><A NAME="AEN54406" ></A ><P > The catalog <TT CLASS="STRUCTNAME" >pg_shadow</TT > contains information about database users. The name stems from the fact that this table should not be readable by the public since it contains passwords. <A HREF="view-pg-user.html" ><TT CLASS="STRUCTNAME" >pg_user</TT ></A > is a publicly readable view on <TT CLASS="STRUCTNAME" >pg_shadow</TT > that blanks out the password field. </P ><P > <A HREF="user-manag.html" >Chapter 17</A > contains detailed information about user and privilege management. </P ><P > Because user identities are cluster-wide, <TT CLASS="STRUCTNAME" >pg_shadow</TT > is shared across all databases of a cluster: there is only one copy of <TT CLASS="STRUCTNAME" >pg_shadow</TT > per cluster, not one per database. </P ><DIV CLASS="TABLE" ><A NAME="AEN54418" ></A ><P ><B >Table 41-26. <TT CLASS="STRUCTNAME" >pg_shadow</TT > Columns</B ></P ><TABLE BORDER="1" CLASS="CALSTABLE" ><COL><COL><COL><COL><THEAD ><TR ><TH >Name</TH ><TH >Type</TH ><TH >References</TH ><TH >Description</TH ></TR ></THEAD ><TBODY ><TR ><TD ><TT CLASS="STRUCTFIELD" >usename</TT ></TD ><TD ><TT CLASS="TYPE" >name</TT ></TD ><TD > </TD ><TD >User name</TD ></TR ><TR ><TD ><TT CLASS="STRUCTFIELD" >usesysid</TT ></TD ><TD ><TT CLASS="TYPE" >int4</TT ></TD ><TD > </TD ><TD >User ID (arbitrary number used to reference this user)</TD ></TR ><TR ><TD ><TT CLASS="STRUCTFIELD" >usecreatedb</TT ></TD ><TD ><TT CLASS="TYPE" >bool</TT ></TD ><TD > </TD ><TD >User may create databases</TD ></TR ><TR ><TD ><TT CLASS="STRUCTFIELD" >usesuper</TT ></TD ><TD ><TT CLASS="TYPE" >bool</TT ></TD ><TD > </TD ><TD >User is a superuser</TD ></TR ><TR ><TD ><TT CLASS="STRUCTFIELD" >usecatupd</TT ></TD ><TD ><TT CLASS="TYPE" >bool</TT ></TD ><TD > </TD ><TD > User may update system catalogs. (Even a superuser may not do this unless this column is true.) </TD ></TR ><TR ><TD ><TT CLASS="STRUCTFIELD" >passwd</TT ></TD ><TD ><TT CLASS="TYPE" >text</TT ></TD ><TD > </TD ><TD >Password (possibly encrypted)</TD ></TR ><TR ><TD ><TT CLASS="STRUCTFIELD" >valuntil</TT ></TD ><TD ><TT CLASS="TYPE" >abstime</TT ></TD ><TD > </TD ><TD >Password expiry time (only used for password authentication)</TD ></TR ><TR ><TD ><TT CLASS="STRUCTFIELD" >useconfig</TT ></TD ><TD ><TT CLASS="TYPE" >text[]</TT ></TD ><TD > </TD ><TD >Session defaults for run-time configuration variables</TD ></TR ></TBODY ></TABLE ></DIV ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="catalog-pg-rewrite.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" ACCESSKEY="H" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="catalog-pg-statistic.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><TT CLASS="STRUCTNAME" >pg_rewrite</TT ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="catalogs.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><TT CLASS="STRUCTNAME" >pg_statistic</TT ></TD ></TR ></TABLE ></DIV ></BODY ></HTML >