Geochemical Schema, based on the Database Model Schema version 1.1.1 GeochemistryData element is simply a utility container for geochemistry elements that may exist independently of (in association with) each other. It acts as a root element only. A survey is the most important element in the schema. Everything else is organised around it. This type act as a pointer. It is an association to objects that are not GML features. The 'remoteSchema' attribute allows an element that carries link attributes to indicate that the element is declared in a remote schema rather than by the schema that constrains the current document instance. A survey has many siteMembers. By definition, at least one site must be visited at each Site_Cluster--classificationNodeList. It is not necessary for any samples to be collected at a particular site. A survey is conducted by an organisation. An organisational unit is an administrative concept. The organisational unit is defined on a scale that makes sense relative to the data being stored. A project is an administrative concept. It is impossible to define in a rigid way, because it is continuously evolving. What constitutes a project may vary from one organisation to another. It may be rigidly tied to funding, time period, or staff. The ProjectType is intended to capture enough information to allow recording of the most important information. A project is led by one or more principal investigators. A principal investigator is an individual, who is indirectly related to a survey via the ProjectType. The list of attributes is kept fairly brief, to minimise maintenance problems. Contains information on publications which use data from a survey. This type is highly denormalised, in order to avoid the great complexities of literature references. It provides enough information to allow the user to obtain a copy of the publication. A survey can collect many different types of samples. The type for a sample. A sample corresponds exactly to what is collected in the field. If material from a single source is separated in the field, then it should count as multiple samples. A sample may be broken into SubSamples after it has been removed from the collection site. After a sample has been collected, it may be split into multiple components (e.g. till samples are routinely seived into different size fractions). Each subsample is, in some way, distinct from the other subsamples. A subsample is not a split into identical parts. By definition, each sample must be connected to at least one subsample. If the subsample is identical to the sample, then it is classed as "undivided". Base type for PreparedSampleType and LaboratorySampleType. The subSampleList is restricted. This type defines the type for a subsample. A subsample may be split into two or more identical parts, all of which are submitted for analysis. This is a very useful QA/QC technique. By definition, every subsample must be connected to at least one split subsample. This type defines the type for a split subsample. Every sample that is chemically analysed, contains many analytical results. type for Analyses result Analysis needs a Analytical Method. Analysis may need a Control Reference. The type for AnalyticalSampleBundle. An AnalyticalSampleBundle consists of a group of samples which have a common analytical history. The nature of this history is specified by AnalyticalSampleBundleTypeID. Each data bundle is assigned a unique ID. for metadata property type. Abstract type for any metadata. This is the CGKN metadata profile. Every survey should have one, and only one, CGKNMetaData. CGKN metadata is related to CGKNMetadataContactInfo. The CGKNMetadataContactInfo contains contact details as required by the CGKN metadata profile ClassificationNodeList for classified objects such as Site, Sample and SubSample. This type is available wherever there is a need for a "text" type property. It is of string type, so the text can be included inline, but the value can also be referenced remotely via xlinks. If the remote reference is present, then the value resolved by traversing the link should be used. The string content of the element can be used for an annotation. N.B. string is the only simpleType which is valid when empty, so this type can only be applied to string simpleContent types. enumeration for province codes. enumeration for progress values.