| Pi Day; Coherence and Kafka; SQL joins; OML4PY; PL/SQL and Java quizzes |
|
|
| February 2022 |
| Plus, how to build a dynamic website using Next.js and a headless CMS |
|
|
|
|
|
|
|
Are you excited for Pi Day—that is, March 14? Certainly, the name is more intuitive for those countries that write dates with the month coming before the day: 3.14.2022. If you live in a place where the date is written as 14.3.2022, well, it’s still Pi Day.
The Oracle Developer Resource Center has a full set of programs planned. Save this link to see gaming hacks, full-stack cloud demonstrations, sports analytics, and more.
Separately, Oracle’s developer event team wonders what you think about the event registration process—and what types of events appeal most to you. Please fill out their survey here, and thank you.
Send your feedback on this newsletter to me at alan.zeichick@oracle.com.
Take care,
Alan Zeichick
Editor at Large
@zeichick |
|
|
| Product announcements |
|
There’s a new command-line interface for Coherence. You can use cohctl to view all cluster information such as clusters, machines, members, services, caches, federation, persistence, and much more, as well as to perform various management operations against clusters.
The Micronaut framework is a modern full-stack framework backed by the Micronaut Foundation. Oracle Labs has made a major contribution that further optimizes the construction of cloud native applications with GraalVM: Micronaut Serialization.
Oracle SQL Developer 21.4.2 is available with critical bug fixes including an update for the log4j library. This release is available for Windows, Linux, and macOS. |
|
|
| Events |
|
Oracle Cloud Hangout Cafe (commonly known as “Ochafe”) is a technical study session for developers and engineers. It will dig deeper into the technologies that should be acquired in the cloud native era. This session will focus on Kubernetes security.
March 9
Register for Oracle Developer Live: Java Innovations, which will introduce Java 18
March 22 in the Americas
March 24 in Europe, Middle East, Africa, Japan, and Asia Pacific
For the latest Oracle integration update and technology roadmap, consider attending the Partner Technical Forum, our annual conference for consultants, developers, and architects. It’s a three-day virtual event with a mix of presentations and hands-on labs on software as a service.
March 22–25 |
|
|
|
| This is the last month to get certified for Oracle Cloud Infrastructure (OCI) for free, so be sure to take your free certification exam on or before February 28. While free OCI training will remain free indefinitely, don’t miss the chance to add a valuable Oracle credential to your résumé—for free. Available exam time slots are limited, so sign up today. |
|
|
| PL/SQL and Java quizzes |
| Quiz #1, for PL/SQL |
You execute the following commands:
create sequence qz_brick_seq;
create table qz_bricks (
brick_id ##REPLACE##
primary key,
shape varchar2(10),
colour varchar2(10)
);
insert into qz_bricks
values ( default, 'red', 'cylinder' );
insert into qz_bricks
values ( default, 'cube', 'blue' );
Which choices can go in the ##REPLACE## section, so both inserts run without error?
Choice 1: raw(16) default sys_guid()
Choice 2: integer default qz_brick_seq.nextval
Choice 3: integer default qz_brick_seq.currval
Choice 4: integer generated as identity
Choice 5: integer autoincrement
Choice 6: No choice is correct
Submit your choice(s) and see the correct answer here. (If you have never used Oracle DevGym, you will need to create a free account and log in.) |
|
|
|
| Quiz #2, for Java |
Which of the following statements are correct about a Java class? Choose two.
Choice 1: A Java class must have a name shown in the source code.
Choice 2: A Java class may have several local variables with the same name inside the same method.
Choice 3: A Java class may have several import statements.
Choice 4: An underscore character ("_") is a valid Java class name.
Submit your choices and see the correct answers here. |
|
|
|
|
| Get a new Developer newsletter delivered to your inbox every month |
|
|
|
|
|
