Book Image

Developing Robust Date and Time Oriented Applications in Oracle Cloud

By : Michal Kvet
Book Image

Developing Robust Date and Time Oriented Applications in Oracle Cloud

By: Michal Kvet

Overview of this book

Proper date and time management is critical for the development and reliability of Oracle Databases and cloud environments, which are among the most rapidly expanding technologies today. This knowledge can be applied to cloud technology, on premises, application development, and integration to emphasize regional settings, UTC coordination, or different time zones. This practical book focuses on code snippets and discusses the existing functionalities and limitations, along with covering data migration to the cloud by emphasizing the importance of proper date and time management. This book helps you understand the historical background and evolution of ANSI standards. You’ll get to grips with data types, constructor principles, and existing functionalities, and focus on the limitations of regional parameters and time zones, which help in expanding business to other parts of the world. You’ll also explore SQL injection threats, temporal database architecture, using Flashback Technology to reconstruct valid database images from the past, time zone management, and UTC synchronization across regions. By the end of this book, you’ll be able to create and manage temporal systems, prevent SQL injection attacks, use existing functionalities and define your own robust solutions for date management, and apply time zone and region rules.
Table of Contents (26 chapters)
1
Part 1: Discovering Oracle Cloud
4
Part 2: Understanding the Roots of Date and Time
7
Part 3: Modeling, Storing, and Managing Date and Time
12
Part 4: Modeling Validity Intervals
17
Part 5: Building Robust and Secure Temporal Solutions
20
Part 6: Expanding a Business Worldwide Using Oracle Cloud

Oracle Cloud Time Zone Reflection

In the past, overall system complexity and performance were handled by the administrator. Date and time reflection was covered by the server, which ensured it was properly managed irrespective of the session definitions. As a result, DATE and TIMESTAMP values were obtained by the sysdate and systimestamp functions, respectively. With globalization, this is no longer the case. The server time zones cannot manage data because different regions and associated time zones must be taken into consideration. Therefore, session perspective reflection should be used.

Moreover, another problem can be if customers want to move their databases to a cloud environment. We often get questions related to the process of moving databases to the cloud. Time management suddenly becomes difficult because there is no proper reference to the time points. It is not enough for the server to use UTC as its reference; time zones must be properly set and evaluated. Dedicated...