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I2 Analyst's Notebook 7 User Guide - ISS Africa -Investigation ...

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Appendix B: The i2 Semantic Approach<br />

Semantic Types and Data Records 0.6<br />

Whereas Analyst’s <strong>Notebook</strong> uses semantic types to provide the real-world<br />

meaning for the entity types, link types and attribute classes that are added to a<br />

chart, data sources use semantic types to add meaning to each record and to the<br />

data in the fields of each record. When you choose to extract this data for charting<br />

in Analyst’s <strong>Notebook</strong>, it is transferred to Analyst’s <strong>Notebook</strong> in the form of a data<br />

record, which is held as part of the chart item.<br />

A data record has a unique identifier called a database key and a related semantic<br />

type. Linked to the key is a collection of data items derived from the record fields,<br />

known as properties. Each property is assigned a property semantic type, which is<br />

used to align the data with similar properties from other data sources. It provides<br />

meaning for the data when matching the data with other chart items. These<br />

semantic types are all assigned by the data source and cannot be changed within<br />

Analyst’s <strong>Notebook</strong>.<br />

360 i2 Analyst’s <strong>Notebook</strong> 7 <strong>User</strong> <strong>Guide</strong>: Customizing & Analyzing<br />

This semantic type<br />

provides meaning for<br />

the data record, and<br />

helps to align this data<br />

record with other data<br />

records in the chart.<br />

These semantic types<br />

provide meaning for the<br />

property values, and<br />

help to align the values<br />

with other similar<br />

properties in other data<br />

records.

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