Which MARC component contains specific data pieces within a field and is identified by a delimiter and a code?

Which MARC component contains specific data pieces within a field and is identified by a delimiter and a code?

• A. Indicators (Marc)
• B. Subfields (Marc)
• C. Tags
• D. Leader

Answer: (B)

In MARC records, the data inside a field is divided into smaller pieces called subfields. Each subfield is introduced by a delimiter and a code, such as $a or $b, followed by the actual data. This setup lets one field hold several related data items separately, like the title, subtitle, author, and other details, all within the same field. The reason this is the best choice is that the phrase “specific data pieces within a field” describes the subfields themselves, and the way they’re identified—by a delimiter and a code—is exactly how MARC distinguishes each piece. For example, in a title field you might see something like 245 10 $a The Great Gatsby $c by F. Scott Fitzgerald, where the subfield codes mark different parts of the title information, and each piece of data follows its code. To contrast briefly: the indicators are separate within the field to provide usage notes about the field, not to separate the data items inside the field; the tag identifies which field you’re looking at (e.g., 245 for Title Statement); the leader is a fixed header for the whole record. The subfields are the elements that get delimited by the delimiter and coded to organize the data inside a field.

In MARC records, the data inside a field is divided into smaller pieces called subfields. Each subfield is introduced by a delimiter and a code, such as $a or $b, followed by the actual data. This setup lets one field hold several related data items separately, like the title, subtitle, author, and other details, all within the same field.

The reason this is the best choice is that the phrase “specific data pieces within a field” describes the subfields themselves, and the way they’re identified—by a delimiter and a code—is exactly how MARC distinguishes each piece. For example, in a title field you might see something like 245 10 $a The Great Gatsby $c by F. Scott Fitzgerald, where the subfield codes mark different parts of the title information, and each piece of data follows its code.

To contrast briefly: the indicators are separate within the field to provide usage notes about the field, not to separate the data items inside the field; the tag identifies which field you’re looking at (e.g., 245 for Title Statement); the leader is a fixed header for the whole record. The subfields are the elements that get delimited by the delimiter and coded to organize the data inside a field.