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100 Main Entry – Personal Name
110 Main Entry – Corporate Name
111 Main Entry – Conference Name
1xx fields are main entry fields for the name of individuals, corporations, groups, or organizations responsible for the content of the item. The 1xx fields are usually indexed which means that the patron can search the library catalog using the names in these fields. As individuals, groups or organizations can often have the same or similar names, or because they may have two or more names, an Authority File has been created so that the same name will be used for the same entity every time it is entered into the catalog. This helps to ensure that the patron will be able to retrieve all items by an individual or organization regardless of the name used on any one item.
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100 1_ Wilde, Oscar ǂq (Oscar Fingal O’Flahertie Wills), ǂd 1854–1900.
In RDA, you may see a relator code in a subfield e after names in the field– accept them if they are there but, it is not necessary to add them.
Examples:
100 1_ Alexander, Thomas G., ǂd 1935– ǂe author.
100 1_ Wilde, Oscar ǂq (Oscar Fingal O’Flahertie Wills), ǂd 1854–1900, ǂe author.
Check the Punctuation. The 1xx fields should always end with a period except when there is an open date in a subfield d or additional name information in parentheses after a subfield q. Information within additional subfields in the 1xx fields should be separated by a comma (except after open dates in a subfield d or before name information in the subfield q). The examples above illustrate proper punctuation.
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Valid and partial matches do not need any further attention during the copy cataloging process but, invalid headings need to be resolved. If you are prompted to use alternative heading, check to see that it is applicable to the item you are cataloging and use the modified heading. If you are not sure what to do, ask a cataloger for help.
130 Uniform Title Main Entry
Sometimes an item may have a title that varies in its differing formats, editions, languages, etc. In this case an authorized or uniform title is chosen and established as the designated form to be used in all records and is put into a 130 (or 240) field in addition to the title found on the item which is given in the 245 field. The 130 field is only used if there is no personal, corporate, or conference main entry listed in a 1xx field. If a personal, corporate, or conference main entry is listed in a 1xx field the uniform title information should be entered into a 240 field. All initial articles (a, an, the) are to be omitted in uniform titles.