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

Exploring SQL translation profiles

A SQL translation profile can serve as the first solution for dynamic SQL transformation. Although it is primarily intended to transform non-Oracle SQL syntax, it can also be used internally to transform date function calls and representations. The DBMS_SQL_TRANSLATION package and its methods power the management of the SQL translation profile. Simply, the translation profile is created and given a name (in our case, it is called DATE_PROF), and then the query transformation registration is carried out. Multiple statements can be registered for the transformation by using the REGISTER_SQL_TRANSLATION procedure of the DBMS_SQL_TRANSLATION package.

The REGISTER_SQL_TRANSLATION procedure takes three parameters – the name of the SQL translation profile (parameter 1), the original statement (parameter 2), and the transformed statement (parameter 3). In our case, we transform two statements by referencing the sysdate and systimestamp functions...