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Salesforce Apex Language is a very robust language and therefore a salesforce developer needs to use the right attributes and the proper values to define any variables. In this blog, you will get to know about all the details like data types, field types, and a few salesforce components used in Salesforce.

Let’s see the topics covered in this blog

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Different DataTypes in Salesforce

Apex in Salesforce assigns a data type to all variables and expressions, such as sObject, primitive, or enum. We use these data types as it is required depending on the condition.

  • Integer, Double, Long, Date, Datetime, String, ID, or Boolean are examples of primitives 
  • A sObject, such as an Account, Contact, or MyCustomObject c, is either general or particular.
  • A collection that includes the following items:
    • A list (or array) of primitives, sObjects, user-defined objects, Apex classes created objects or collections 
    • a collection of primitives
    • A primitive-to-primitive map, sObject, or collection
  • An enumeration is a typed list of values 
  • Objects made from Apex classes defined by the user
  • Objects built with Apex classes provided by the system
  • Null (for the null constant)

There are different kinds of data types depending on conditions. The five different data types in API:

  • ID
  • String
  • Boolean
  • Double
  • Varies by type

Variables in Salesforce

  • The syntax for declaring local variables, defining and initializing the multiple variables in a single line, is similar to that of Java.
  • If you declare a variable but don’t assign a value to it, it will be null. In its simplest form, null denotes the lack of a value. Any variable specified with a primitive type can also be set to null.
  • Variables can be declared at any point in a block and then take on the scope from there. Sub-blocks can’t change the name of a variable that has already been used in a parent block, although parallel blocks may.

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Different Salesforce Field Types

Every field within Salesforce has a defined data type. When these fields are created in Salesforce, you are prompted to choose its data type such as String, TextArea, Number, PickList, etc. It’s important to understand that these fields expect data of a certain type.

Field Type Description
Address A compound data type that contains address field data
AnyType A polymorphic data type that returns a string, picklist, reference, Boolean, currency, int, double, percent, ID, date, DateTime, URL, or email data depending on the kind of field involved
Calculated A field that is defined by a formula
Combobox A Combobox, which includes a set of enumerated values and allows the user to specify a value, not on the list
Currency  Currency values
DataCategoryGroupReference Reference to a data category group or a category unique name
Email Email addresses
EncryptedString An encrypted text field that contains any combination of letters/numbers/symbols stored in an encrypted form; you can set up a maximum length of up to 175 characters; available in API versions 11.0 and later
ID A primary key field for an object
JunctionIdList A string array of referenced ID values representing the many-to-many relationship of an underlying junction entity; you have to query and manipulate the string array to query and manipulate the underlying junction entities in a single API call
Location A compound data type that contains latitude and longitude values for geolocation fields
Masterrecord When records are merged, the ID of the record that is saved (the other records are deleted)
Multipicklist Multi-select picklist includes a set of enumerated values from which multiple values can be selected
Percent Percentage values
Phone Phone numbers; values can include alphabetic characters; client applications are responsible for phone number formatting
Picklist Picklist includes a set of enumerated values from which one value can be selected
Reference Cross-references to a different object; analogous to a foreign key field in SQL
Textarea A string that is displayed as a multi-line text field
URL URL values; usually, client applications should display these as hyperlinks

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Different Salesforce Field Types Depending on the Data Types and their Transformation Data Types.

We can group different field types together with data types. Some of the examples are listed below.

Data Type Field Types Transformation Data Types
ID Look up relational, master-detail relationship String
String Auto number, email, phone, multi-select picklist, text, text area, long text area, rich text area, data category group reference, and URL String
Boolean Checkbox Integer
Double Currency, formula, number, percent, and roll-up summary Decimal
Varies by type A type must be given when formula fields are added to the user interface. Currency, date, date/time, number, percent, or text are all API data types that correspond to this type. String


Salesforce Components

  • TAB menu: In this, all tabs are arranged in a row.
  • All TAB menu: In this, you can find all the tabs available on
  • More TAB menu: In this, you can find more tabs available on
  • User menu: This is available at the top with a username. By using this component of Salesforce you can change your profile settings.
  • Sidebar menu: In this, there are different sections such as build, monitor, jobs, logs, etc.
  • Application menu: It allows shuffling between applications.
  • Search Menu: It helps search in Salesforce.

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1 thought on “Salesforce: Data Types, Field Types, and Components”

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