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

Summary

In this chapter, you got familiar with the existing functionalities in DBS Oracle, mostly related to day and month granularity. We emphasized the ADD_MONTHS and MONTH_BETWEEN functions for dealing with month precision.

Mathematical arithmetic applies a day precision shift. Therefore, this chapter referenced the LAST_DAY function for providing the last day of the month and the NEXT_DAY function, which provides the closest larger DATE value according to the specified weekday. The weekday value is set by the string abbreviation; alternatively, the serial number of the day within the week is used. However, as we have shown, these values depend on the region, language, or territory. Therefore, our own implementation for getting the next day was proposed and discussed.

In addition, we learned the principles of DATE value rounding and truncating. Then, the PERSONAL_ID value was introduced, which can be used as the primary key for a person table, providing composite information...