Sophie: postgresql9.0-docs-9.0.15-2.mga4 noarch

postgresql9.0-docs-9.0.15-2.mga4.noarch.rpm

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<HTML
><HEAD
><TITLE
>Implementation Features</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 9.0.15 Documentation"
HREF="index.html"><LINK
REL="UP"
TITLE="Large Objects"
HREF="largeobjects.html"><LINK
REL="PREVIOUS"
TITLE="Introduction"
HREF="lo-intro.html"><LINK
REL="NEXT"
TITLE="Client Interfaces"
HREF="lo-interfaces.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="2014-01-24T13:16:52"></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"
><A
HREF="index.html"
>PostgreSQL 9.0.15 Documentation</A
></TH
></TR
><TR
><TD
WIDTH="10%"
ALIGN="left"
VALIGN="top"
><A
TITLE="Introduction"
HREF="lo-intro.html"
ACCESSKEY="P"
>Prev</A
></TD
><TD
WIDTH="10%"
ALIGN="left"
VALIGN="top"
><A
HREF="largeobjects.html"
ACCESSKEY="U"
>Up</A
></TD
><TD
WIDTH="60%"
ALIGN="center"
VALIGN="bottom"
>Chapter 32. Large Objects</TD
><TD
WIDTH="20%"
ALIGN="right"
VALIGN="top"
><A
TITLE="Client Interfaces"
HREF="lo-interfaces.html"
ACCESSKEY="N"
>Next</A
></TD
></TR
></TABLE
><HR
ALIGN="LEFT"
WIDTH="100%"></DIV
><DIV
CLASS="SECT1"
><H1
CLASS="SECT1"
><A
NAME="LO-IMPLEMENTATION"
>32.2. Implementation Features</A
></H1
><P
>    The large object implementation breaks large
    objects up into <SPAN
CLASS="QUOTE"
>"chunks"</SPAN
> and stores the chunks in
    rows in the database.  A B-tree index guarantees fast
    searches for the correct chunk number when doing random
    access reads and writes.
   </P
><P
>    As of <SPAN
CLASS="PRODUCTNAME"
>PostgreSQL</SPAN
> 9.0, large objects have an owner
    and a set of access permissions, which can be managed using
    <A
HREF="sql-grant.html"
>GRANT</A
> and
    <A
HREF="sql-revoke.html"
>REVOKE</A
>.  
    For compatibility with prior releases, see
    <A
HREF="runtime-config-compatible.html#GUC-LO-COMPAT-PRIVILEGES"
>lo_compat_privileges</A
>.
    <TT
CLASS="LITERAL"
>SELECT</TT
> privileges are required to read a large
    object, and 
    <TT
CLASS="LITERAL"
>UPDATE</TT
> privileges are required to write to or
    truncate it.
    Only the large object owner (or the database superuser) can unlink, comment
    on, or change the owner of a large object.
   </P
></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="lo-intro.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="lo-interfaces.html"
ACCESSKEY="N"
>Next</A
></TD
></TR
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
>Introduction</TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="largeobjects.html"
ACCESSKEY="U"
>Up</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
>Client Interfaces</TD
></TR
></TABLE
></DIV
></BODY
></HTML
>