Databases Reference
In-Depth Information
Entity object
The opions for an enity object are changed in the
Overview
tab. Some seings related to
atributes can be changed using the
Property Inspector
window. Let us explore the opions
under the enity object.
General
Some general seings for the enity object are as follows:
Name
: This secion displays the name of the enity object. This secion is editable,
and changing the name will afect all the arifacts related to the enity object.
Package
: This secion displays the package for the enity object. The
pencil
icon
next to the opion will help to change or refactor the value.
Extends
: This opion is used to extend another enity object. The extended enity
will become the parent of the current enity. A window will be shown to the user
to select the parent enity.
For example, if you have
SalesAccountEO
and
CustomerAccountEO
, then these
two enity objects can extend the
AccoutEO
to inherit the common features.
Property Set
: We can have properies and messages deined as a named-value pair
in property sets. Property sets are created from the
New Gallery
wizard under the
ADF Business Components
secion.
Schema Object
: This is the actual name of the table. The pencil icon will help the
user to select the schema object from the database if the user decides to change
the table associated with the enity object.
Alternate key
We can create an alternate key, other than a primary key, to uniquely idenify a row.
The alternate key will usually be deined on an atribute other than the primary key.
For example, alternate keys can be defined on a
Name
atribute for uniqueness.
Tuning
The tuning seings are as follows:
Use Update Batching
: This seing is used to update the eniies in a batch when
the number exceeds the number provided in the space available. For example,
if the enity is geing updated from muliple sources, then this opion will enable
us to issue a single collecive DML statement for bulk CRUD operaion. Using this
property will reduce the number of statements geing generated.
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