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This
section focuses on the application elements located in the Data
Dictionary node
of the AOT. The other elements in the AOT are discussed in later sections in
this course. The following list shows all the element types in the Data
Dictionary:
- Tables store data in the system.
They contain fields of various data types, depending on the type of data
they hold. Data is entered, edited, and deleted through forms. Tables
are discussed in more detail later in the section.
- Maps are used to link tables.
By creating a map, fields can be accessed in different tables if the
fields are of similar types but have different names. For example, a
class that implements functionality to process data in the tables. If
these tables use identical names for the columns, you can reuse data
processing classes.
- Views are read only data
representations that combine multiple table objects. Views present a
selected set of rows and columns by joining different tables through
data sources and relations between them. Frequently views represent a
subset of fields from a single table to simplify reporting.
- Extended
Data Types
are customized data types based on the primitive MorphX data types
including strings, integers, reals, dates, times, enums, or containers.
- Base
Enums
are a list of literals that can be used throughout the development
environment in MorphX. Enums (enumerable type) are an extended data type
that inherits from a base enum. The elements in an enumerable type are
created by using the AOT, where the name of the type and the literals
can be described in the definition.
- Configuration keys disable features in the
application for all users. Each key controls access to a specific
feature, and once it is disabled, the feature is automatically removed
from the user view.
- License codes control which elements
can be enabled. If a license code is not purchased for a module, then
any element attached to that license code cannot be used.
- Security keys are a legacy from
previous versions of Microsoft Dynamics AX and will be removed in the
next version. Security is covered in detail later in this course.
- Table collections do not contain any data.
Virtual companies are built on table collections. They contain tables
shared by more than one company. A table can be a part of more than one
table collection.
- Perspectives organize tables, folders,
fields, and roles, in subsets according to application modules in an
intuitive way, matching the same concept as Microsoft SQL Server
Reporting Services. Perspectives are also discussed in more detail with
the use of OLAP cubes.
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