These guidelines cover both CD- and DVD-ROMs; any differences in treatment will be noted.

Searching tips

• ISBN if present
• Publisher number
• Title and author combo

Match points

• Format
  • 245 $h
    → [electronic resource]
  • 300 → The following terms may be used in $a. Verify the size in $c; standard CD- and DVD-ROMs should say 4 3/4 in or 10 cm.
    computer optical disc
    CD-ROM
    DVD-ROM
    disc

• • 33Xs → These fields are used in RDA records, though they occasionally appear in AACR2 records.
    
    • 336 Content type → Any of the following terms is acceptible; for other terms, confer with the e-resources cataloger.
      cartographic image
      computer program
      notated music
      performed music
      sounds
      spoken word
      still image
      text
      three-dimensional moving image
      two-dimensional moving image
      other
      unspecified
    • 337 Media type (optional field)
      computer
    • 338 Carrier type
      computer disc
      
      
  • 538→ There may be format information in this field in addition to system requirements.
  • 500 → There might be useful matching information in a note.
    
    
• Standard number
  • ISBN (020)
  • ISSN (022)
    
    
• Date
  • Fixed field → The latest date on the item needs to match the latest date in the record.
  • 250 → There may be date information in the edition statement.
  • 260 $c → The latest date on the item needs to match the latest date in record.
  • 500 → There may be date information in a note.
    
    
• Personal or corporate author → This information can be taken from the 100 or 700 fields)
  
  
• Edition
  • 250 → Verify that this information doesn't conflict with any statement on the item.

  • 538 → Verify that this information (i.e. Windows only, Mac and Windows compatible) doesn't contradict with the information on the item. If you're unsure, consult the e-resources cataloger.

• Publisher
  • 260 → One publisher on the item needs to match one publisher on the record.

• Summary → This doesn't have to match, but you can use this information to verify a match if needed.

Edits

• 006

  This field is used to code the characteristics of accompanying material.

  In Aleph,add a blank 006 field and open the form (Ctrl F).

  In Connexion, under the Edit menu, choose Guided Entry -->Insert 006 and select the appropriate format.

  Use the following chart for guidance.

   

  Additional characteristics	Default code	Meaning	Alternative code	Meaning
  Books	a	Language material	t	Manuscript language material
  Computer files	m	Computer file	n/a
  Maps	e	Cartographic material	f	Manuscript cartographic material
  Mixed materials	p	Mixed materials	n/a
  Scores	c	Notated music	d	Manuscript notated music
  Continuing resource	s	Serial/integrating resource	n/a
  Sound recordings	j	Musical sound recording	i	Nonmusical sound recording
  Visual materials	g	Projected medium	k o r	Two-dimensional nonprojectable graphic Kit Three-dimensional artifact or naturally ocurring object

• 007
• 020

• 538

• 516 → may be present, no need to add or delete

When to give to the e-resources cataloger

• needs authority work
• needs summary