O'Reilly logo

OCA Oracle Database SQL Exam Guide (Exam 1Z0-071) by Steve O'Hearn

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

PREFACE

Recently I attended a technical conference hosted by a leading big data vendor. I found myself speaking with an exhibitor about his startup company’s NoSQL product. Now folks, I love all forms of data systems; they all have their place. Key-value pairs, dynamic schemas—they all have a use. But this particular vendor boldly declared that the relational database was useless and “SQL is dead.” He described how his system could harvest text-based comments and infer sentiment across millions of records and support all sorts of clever use cases—all of which, incidentally, is doable with Oracle-driven SQL-based systems. But he was convinced that Oracle’s relational database management system (RDBMS) was irrelevant.

So I asked him, “Let’s say ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required