Understanding Effective EO and VO

Table of Contents

1. Introduction
2. Business Scenario
3. Creating the Table
4. Creating Entity Objects
5. Creating View Objects
6. Inserting Data
7. Updating Data
8. Splitting Records
9. Updating Existing Records
10. Deleting Records

Introduction

In this tutorial, we will explore the concept of effective dated entity objects and view objects. We will discuss their importance in a business scenario and how they can be used to track records over different time periods. We will go through the process of creating entity objects and view objects, inserting data, updating records, splitting records, updating existing records, and deleting records. By the end of this tutorial, You will have a clear understanding of effective dated entity objects and view objects and how to utilize them in your applications. So let's dive in!

Business Scenario

In a business scenario, it is often necessary to Record and track records over specific time periods. For example, let's consider a simple scenario where we want to track the salaries of employees over different time periods. Each employee may have different salary records spanning various years. In such cases, it is essential to have an effective tracking system that allows us to record and manage these records efficiently.

Creating the Table

To implement our business scenario, we need to Create a table in our database to store the employee salary records. We will use a primary key composed of the employee ID, start date, and end date to uniquely identify each record. The table structure will have the following columns: employee ID, salary, start date, and end date.

Creating Entity Objects

Entity objects represent individual rows in a database table. In our case, we need to create an entity object to represent each employee salary record. We will configure the entity object to have an effective date Type and set the start date and end date attributes accordingly. These settings will allow us to track the effective dates of each salary record.

Creating View Objects

View objects provide a set of attributes and query criteria for accessing and manipulating data from the database. In our scenario, we need to create a view object to retrieve the employee salary records. We will configure the view object to have an effective date type and set the start date and end date attributes as query criteria. This will enable us to fetch the salary records Based on specific effective dates.

Inserting Data

Once we have created the entity objects and view objects, we can start inserting data into the database. We can use the createRow() method of the view object to create a new row representing an employee salary record. We will set the necessary attributes such as employee ID, salary, start date, and end date. After setting the attributes, we can call the insertRow() method to insert the record into the database.

Updating Data

In some cases, we may need to update the existing salary records. We can use the updateRow() method of the view object to update the attributes of a specific row. For example, if an employee's salary changes during a certain time period, we can update the salary attribute for that particular record. The updated record will reflect the new salary information.

Splitting Records

Sometimes, we may need to split a salary record into multiple records to represent different time periods. This typically occurs when there is a change in an employee's salary over a specific date range. To split a record, we can use the setEffectiveDateMode() method of the view object. We will set the mode to "split" and provide the necessary attributes such as the new salary and the effective date. This will create a new record with the updated salary and adjust the start and end dates of the existing record accordingly.

Updating Existing Records

In certain scenarios, we may need to update an existing record without splitting it into multiple records. For example, if there is a correction in the salary information for a particular time period, we can update the existing record directly. We can use the setEffectiveDateMode() method with the mode set to "update" to modify the salary attribute of the record. This will update the existing record with the corrected salary information.

Deleting Records

There may be instances where we need to delete certain salary records from the database. To delete a record, we can use the remove() method of the view object. We will set the necessary attributes, such as the employee ID and the date range, to identify the specific record we want to delete. The remove() method will delete the record from the database.

Conclusion

In this tutorial, we have covered the concept of effective dated entity objects and view objects. We have discussed their significance in a business scenario and how they can be utilized to track records over different time periods. We have explored the process of creating entity objects and view objects, inserting data, updating records, splitting records, updating existing records, and deleting records. By implementing these techniques, you can effectively manage and manipulate time-based data in your applications.

Highlights

• Effective dated entity objects and view objects are essential for tracking records over specific time periods.
• Creating entity objects and view objects allows for efficient data management.
• Inserting, updating, and deleting records are key operations in effective dated entity objects and view objects.
• Splitting records is useful when there are changes in attribute values over a particular time period.
• Updating existing records is used to modify specific attributes without splitting the record.
• Deleting records helps in removing unnecessary or erroneous data from the database.

FAQs

Q: How do effective dated entity objects and view objects work?

A: Effective dated entity objects and view objects allow you to track records over specific time periods. The entity objects represent individual rows in a database table, while view objects provide a set of attributes and query criteria for accessing and manipulating data. By configuring the effective date type and setting the appropriate attributes, you can retrieve and manage records based on their effective dates.

Q: When should I split a record in effective dated entity objects and view objects?

A: Splitting a record is necessary when there is a change in attribute values over a particular time period. For example, if an employee's salary changes from a certain date onwards, you would split the record to represent the old salary and the new salary separately. This allows for accurate tracking of changes in attribute values over time.

Q: Can I update an existing record without splitting it in effective dated entity objects and view objects?

A: Yes, you can update an existing record without splitting it. This is useful when there is a correction or modification in the attribute values of a specific record. By setting the effective date mode to "update" and providing the updated attribute values, you can directly modify the existing record without creating additional records.

Q: How can I delete records in effective dated entity objects and view objects?

A: To delete records, you can use the remove() method of the view object. Set the necessary attributes, such as the record's identifier and date range, to identify the specific record you want to delete. The remove() method will delete the record from the database accordingly.

Q: How can effective dated entity objects and view objects improve data management in business scenarios?

A: Effective dated entity objects and view objects provide a structured approach to record and manage data over specific time periods. They allow for accurate tracking of changes, easy retrieval of data based on effective dates, and efficient manipulation of records. This helps businesses maintain accurate historical records and make informed decisions based on historical data.

Q: Can I use effective dated entity objects and view objects in other data management scenarios?

A: Yes, the concept of effective dated entity objects and view objects can be applied to various data management scenarios where the tracking of records over time is required. It can be used in scenarios such as inventory management, project management, customer relationship management, and more. The flexibility and versatility of effective dated entity objects and view objects make them a valuable tool in any data-driven application.