Searching for Datasets

The Data Explorer extension for DSpace includes a dataset searching page that can be used to retrieve data tables which contain specific columns or which include certain metadata characteristics.

Specifying search criteria

The dataset search page may be accessed via the following option on the repository's home page (left sidebar):

After selecting the option, the dataset search area will be presented to the user.

Searching by specifying Table Headers

An user may be interested in looking for tables from a specific domain. For example, a chemist may be interested in looking for tables where one of the column names was the Active Substance. To look for tables which contain specific columns, an user may add them to the restriction by typing their metadata name. The system will assist the user in filling in the correct metadata parameter:

The user may navigate through the suggestions provided using the arrow keys on the keyboard or the mouse and select the desired value:

The user may add more headers to the restriction by using the 'Add' button. To remove all the headers in the list of restrictions, the user may select the 'Reset' button.

The user can also specify whether to find tables that contain all the specified headers or tables which contain any subset of the specified headers. To do this, there is an option on the headers specification section to select the logical operator used for the restriction:

After submitting the search request, the results are shown in a list which includes, for each matching table, its owning item and the link to the original file which contains that logical table:

Searching by specifying Table Metadata

Searching for tables by specifying table metadata values is similar the search using headers:

After selecting the metadata field to search by, the user must include a part of the value to use as parameter for the filtering clause:

Combining the two types of filters

The user may combine the two types of restrictions to find relevant tables. It is however important to note that when restrictions are specified in both restriction groups, only results which satisfy BOTH groups of restrictions will be shown.

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