Contents
How are fields different from Records in a database?
Fields vs Records. Summary: Differences Between Fields and Records in a Database is that field is a combination of one or more related characters or bytes and is the smallest unit of data a user accesses. A field name uniquely identifies each field. When searching for data in a database, you often specify the field name.
What’s the difference between a tab, a record and a field?
A field is one data point within an object (e.g. “First Name” on the lead object). A record is row of field data within an object (e.g. the lead “John Smith”). An object is comprised of its field definitions and records. A tab is used to expose an object and its data to the end user through the web interface. Resources for this Objective.
How does a field’s data type affect a field?
A field’s data type determines many other important field qualities, such as the following: Which formats can be used with the field. The maximum size of a field value. How the field can be used in expressions.
How is the field size determined in a database?
A database uses a variety of characteristics, such as field size and data type, to define each field. The field size defines the maximum number of characters a field can contain. For example, the Instructor ID field contains 6 characters and thus has a field size of 6.
When are two records of the same type equal?
Two variables of a record type are equal if the record type definitions are identical, and if for every field, the values in both records are equal. Two variables of a class type are equal if the objects referred to are the same class type and the variables refer to the same object.
How are record types different from class types?
Records are distinct from classes in that record types use value-based equality. Two variables of a record type are equal if the record type definitions are identical, and if for every field, the values in both records are equal.
Can a record refer to another record in a contacts entity?
Each record in the Accounts entity has a Primary Contact lookup field to a record in the Contacts entity. The lookup can only refer to a record in Contacts and can’t refer to a record in, say, the Teams entity. That last detail is important because you always know what fields will be available for the lookup.