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

Part 4: Modeling Validity Intervals

The aim of this part is to provide a complex description of validity modeling using intervals. Duration modeling generally requires two timepoints expressing a start and end point. However, what about unlimited validity? How can you model it? It is generally clear that if a new state is to be loaded into the system, the user does not need to know when its validity will end – or even whether it ever will. Thus, we will describe various techniques of unlimited validity modeling. Oracle Database provides the Period definition to carry out this modeling.

Temporal models will also be discussed, focusing on various granularity precisions. But that is not enough. Therefore, temporal dimensions will also be explored, such as validity, transaction validity, the IPL model, the IPLT model, online and offline application modes, and future valid record management. We will draw your attention to the fact that the existence of attributes expressing date...