12 <concept xml:lang="en" id="GUID-5F3B814F-30B2-5325-A83F-A48ACCF095EB"><title>Database compaction</title><prolog><metadata><keywords/></metadata></prolog><conbody><p>When a File-store database is constructed using the <codeph>RDbNamedDatabase</codeph> interface, there is no access to the underlying store in order to compact it and recover any free space for re-use.</p> <p>The <codeph>RDbDatabase</codeph> abstract base class, however, supports a compaction interface, the <codeph>Compact()</codeph> member function. The class also offers a complementary interface, the <codeph>UpdateStats()</codeph> and <codeph>Size()</codeph> member functions, which calculate and report size and usage information.</p> <p>Incremental forms of these functions are also offered by the <codeph>RDbIncremental</codeph> class.</p> </conbody></concept>

    12 <concept id="GUID-5F3B814F-30B2-5325-A83F-A48ACCF095EB" xml:lang="en"><title>Database

    13 compacting</title><shortdesc>Describes how to compact the database.</shortdesc><prolog><metadata><keywords/></metadata></prolog><conbody>

    14 <p>When a File-store database is constructed using the <codeph>RDbNamedDatabase</codeph> interface,

    15 there is no access to the underlying store in order to compact it and recover

    16 any free space for re-use.</p>

    17 <p>The <codeph>RDbDatabase</codeph> abstract base class, however, supports

    18 a compacting interface, the <codeph>Compact()</codeph> member function. The

    19 class also offers a complementary interface, the <codeph>UpdateStats()</codeph> and <codeph>Size()</codeph> member

    20 functions, which calculate and report size and usage information.</p>

    21 <p>Incremental forms of these functions are also offered by the <codeph>RDbIncremental</codeph> class.</p>

    22 </conbody></concept>