Create the ANIMAL table


The procedure to create the ANIMAL table is demonstrated in this Video (wmv) (63.3MB; 4.12min).

Create the ANIMAL table with the following fields:

Field Name  Data Type  Description 
CowID  Autonumber  Cow ID  unique for all records 
CowNum  Number  Cow ID unique to a farm 
FARMERID  Number  Farmer Identification code 
DOB  Date/Time  Date of birth of the cow 
Lactation  Number  Lactation number  
MY  Number  Annual milk yield   
Mastitis  Yes/No  Has the cow suffered from mastitis in the past 3 months? 
Metritis  Yes/No  Has the cow ever had metritis? 
ROP  Yes/No  Has the cow ever had retention of placenta? 
Lameness  Yes/No Was the cow lame at the time of survey? 
Breed  Text  Breed of the cow 
Comments  Memo  Notes 
Notes
  • Apply an input mask to DOB (such as a short date)
  • You could create a combo-box for the field Breed if you know beforehand the most common cow breeds.
  • Note that the default field size for a Number data type is Long Integer which is okay if you don’t want to store fractions. Use Single or Double if you expect your data to have fractions. You can also use other field sizes such as Byte and Integer but it is usually safe to use Long Integer for numbers without fractions and Double for numbers with fractions. For further information about number field size, keep your cursor in the field size property and press F1.
  • Another property in the General tab worth mentioning here is the Default Value. This is the value that is entered automatically in a field and is useful to reduce data entry time if you expect many observations to have the same value (for example, if most of the farmers are from NSW, then this could be specified in the default value property).
  • For numbers, Access automatically assigns zero as the default value. I usually prefer to delete this, as zero is then assigned even for the missing values, if the data entry operator doesn’t delete it.

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