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Software Requirements Specification

Appendix B: Database Fields

The following tables describe the data and information required. It is organized by topic.

This table contains all the accounts for registered users.  

Table 3: Account Information

Data Element

Description

Login name

A user login name. This must be unique in the system (no two users can have the same login name). The login name may be upto 32 characters long.

E-mail Address

A valid email address. Valid email addresses must have the following format:

<username> @ <hostname> <. Subdomain>+ . <domain>

The username in the email does not need to match the login name.

Password

A pass phrase used to access the system. Pass phrases must be at least 4 characters long, and they may be up to 256 characters. Spaces and special characters are allowed. Pass phrases are case sensitive.

Name

The name (title, first, middle, and last) of the account holder.

Contact information

The physical mail address of the account holder. Work and fax phone numbers (optional).

Organization

The name and location of the organization and department with which the account holder is affiliated.

Account Type

The type of user: Visitor, Provider, Validator, Administrator.

This table contains all the metadata for the system.  

Table 4: Metadata

Data Element

Description

URL

The internet location of the data described by this metadata entry

Title

A brief (80 character) phrase used to identify the data set.

Description

A natural language description of the dataset described by this metadata entry. Descriptions can be up to 10,000 characters.

Organization

The name and contact information for the organization sponsoring the URL.

Source

The sensor used to collect the data.

Range

The minimum and maximum latitudes and longitudes bounding the dataset.

Validated

A Boolean flag that when true, indicates the metadata has been validated and is available to the general public.

Validation entry

User name of validator and the date and time of validation. Also, notes added by validator such as justification for rejection.

Metadata Type

Software or Dataset

This table contains all the sensors and their respective attributes.

Table 5: Instrument Information

Data Element

Description

Instrument title

Instrument title, such as Landsat.

Spectral Resolution

Spatial Resolution

Cost

Description of the cost structure.

Description

Natural language description of instrument, up to 10,000 characters.

Software Engineering II

CS 4311 Fall 2004

Date

9/2/2004 4:15 PM

Page

33

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