Entry Identifier

Definition

Syntax

Entry_ID:

Specifications

• Identifier is determined by the DIF author or GCMD staff
• Required field
• Must be first field in the DIF
• May be used only once
• 1 to 31 alphanumeric characters permitted, including underbar (_), hyphen (-), period (.) and comma (,)

Recommendations

• May use the data center's given metadata ID
• May use a mnemonic giving indication of content
• May use a generic identifier when a DIF represents more than one data set
• If the data set is broken into different DIFs, Entry_ID may be modified to be unique; a suffix in addition to the given metadata ID may be used

Examples

• Entry_ID: OAR0005 (Metadata ID)
• Entry_ID: JPL_DAAC_SSMI_WINDS (Mnemonic indicates content)
• Entry_ID: IGBP_DIS_FIRE (DIF represents more than one data set)
• Entry_ID: OAR0171-B (Metadata ID and Suffix)