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The word container is used to describe any component that can contain other components inside itself.x In the context of Java development, container is a part of the server that manages the lifecycle of Web applications. The Web container cannot be accessed directly by a client but rather, the server manages the Web container. Container elements that are used to describe <Bag>, <Seq> and <Alt> elements.
<rdf:Bag> element: It is used to describe a list of values that are not define in a particular order. The elements are not necessary to be define in a specific order and may contain duplicate values.
Example
<?xml version="1.0"?>
<rdf:RDF
xmlns:rdf="http://www.indo.org/rdf-syntax-ns#"
xmlns:ob="http://www.bookshop.fake/ob#">
<rdf:Description
rdf:about="http://www.bookshop.fake/obd/Nightingale">
<ob:artist>
<rdf:Bag>
<rdf:li>Rohan</rdf:li>
<rdf:li>Parul</rdf:li>
<rdf:li>Shipra</rdf:li>
<rdf:li>Ram</rdf:li>
</rdf:Bag>
</ob:artist>
</rdf:Description>
</rdf:RDF>
<rdf:Seq> element: It is used to describe list of values in a sequence order (for example, in a alphabetical order) and may contain duplicate values.
Example
<rdf:RDF xmlns:rdf="http://www.indo.org/rdf-syntax-ns#" xmlns:ob="http://www.bookshop.fake/ob#"> <rdf:Description rdf:about="http://www.bookshop.fake/ob/nightingale"> <ob:artist> <rdf:Seq> <rdf:li>Rohan</rdf:li> <rdf:li>Parul</rdf:li> <rdf:li>Shipra</rdf:li> <rdf:li>Ram</rdf:li> </rdf:Seq> </ob:artist> </rdf:Description> </rdf:RDF>
<rdf:Alt> element: This element is used to describe a list of alternative values (one can select only one values at a time).
Example
<?xml version="1.0"?> <rdf:RDF xmlns:rdf="http://www.indo.org/rdf-syntax-ns#" xmlns:ob="http://www.compshop.fake/ob#"> <rdf:Description rdf:about="http://www.compshop.fake/ob/Core"> <ob:format> <rdf:Alt> <rdf:li>CD</rdf:li> <rdf:li>Harddisk</rdf:li> <rdf:li>Tape</rdf:li> </rdf:Alt> </ob:format> </rdf:Description> </rdf:RDF>
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