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    Updating core data data model

    A denormalized data model with embedded data combines all related data for a represented entity in a single document.

    This facilitates atomic write operations since a single write operation can insert or update the data for an entity.

    If we create a new managed object, the attribute will automatically be set to the default value specified in this field.

    Let us add two more attributes to the Customer entity: emailid and contactno (for storing a customer's e-mail address and contact number, respectively).

    It displays the browser as well as a diagram view of the data model.

    The Browser view displays two panes, the Entity pane and the Properties pane, for defining entities and their respective properties.

    There are two tools that allow applications to represent these relationships: Embedded documents capture relationships between data by storing related data in a single document structure.When using the MMAPv1 storage engine, growth consideration can affect the decision to normalize or denormalize data.The checkbox Use Core Data for storage will ask Xcode to provide all the default code that is required for using Core Data.These two attributes will also be of type: String as shown in the next screenshot. We can see that three properties are defined, name, emailid, and contactno, one for each attribute that we defined in the model editor.These properties are not declared in the header, as they will be created dynamically at runtime.

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