- Tapa blanda: 572 páginas
- Editor: McGraw-Hill Education; Edición: 2 (14 de diciembre de 2015)
- Colección: Ingegneria
- Idioma: Inglés
- ISBN-10: 0071820280
- ISBN-13: 978-0071820288
- Valoración media de los clientes: Sé el primero en opinar sobre este producto
- Clasificación en los más vendidos de Amazon: nº58.923 en Libros en idiomas extranjeros (Ver el Top 100 en Libros en idiomas extranjeros)
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OCA Oracle Database 12c SQL fundamentals exam guide (Exam 1Z0-061). Con CD-ROM (Ingegneria) (Inglés) Tapa blanda – 14 dic 2015
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Reseña del editor
A Complete Study System for OCA Exam 1Z0-061
Prepare for the Oracle Certified Associate Oracle Database 12c SQL Fundamentals I exam with this Oracle Press guide. Each chapter features challenging exercises, a certification summary, a two-minute drill, and a self-test to reinforce the topics presented. This authoritative resource helps you pass the exam and also serves as an essential, on-the-job reference. Get complete coverage of all OCA objectives for exam 1Z0-061, including:
- Data retrieval using the SQL SELECT statement
- Restricting and sorting data
- Single-row functions
- Using conversion functions and conditional expressions
- Reporting aggregated data with the group functions
- Displaying data from multiple tables with joins
- Using subqueries to solve problems
- Using the set operators
- Manipulating data with DML statements
- Using DDL statements to create and manage tables
Electronic content includes:
- 150+ practice exam questions with detailed answers and explanations
- Score report performance assessment tool
- PDF copy of the book
Biografía del autor
Roopesh Ramklass, OCM, is a technical specialist with 10 years of experience in a wide variety of IT environments, including software development, system administration, systems analysis, software design, systems architecture, courseware development, and lecturing. Ramklass is experienced in managing and executing IT development projects, including infrastructure systems provisioning, software development, and systems integration.
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Then you take the test and find that a substantial chunk of the questions are about things that were not covered in the book, and that most of the questions are not simple "pick one" questions of the practice test but "pick two/three/all correct answers of five" which eat up time like nothing, and that for some of these, there are more correct answers (proven by actually trying the hypotheticals in question) than are provided.
I suspect I'm going to get a bunch of Oracle apologists on my case right about now, yammering about how of course it's hard, they can't just hand out certificates willy-nilly. Or that I'm bitter because I failed the test and am just venting.
It is true that I failed the test and am venting, which means that this review should be considered more accurate, not less, for the simple reason that I actually took the test and thus am in the best position to judge whether this book was adequate preparation. The test asks several questions about the FETCH FIRST functionality which was nowhere in the book. It asks several questions about LISTAGG which was nowhere in the book. When working through this book, I tended to either get 100% of the end-of-chapter questions correctly, or miss literally one or two at most. When doing a blind run through the included practice test (that is, I finished working through the chapters and decided to take it without reviewing previous notes), I scored an 85%. All of this translated to a 55% on the actual exam. Think about that, an 85% on the OFFICIAL PRACTICE EXAM = 55% on the ACTUAL exam. At best, somebody was sleeping at the wheel when the practice materials were created, and at worst, it's nothing but an additional revenue stream for Oracle.
The test should be challenging and thus require you to have a solid grasp of the material, not cause you to fail by asking you questions that were not in the official material. That's not a certification, that's a con.
Edit: also, the instructions to actually setting up the sample DB are nonexistent. Not even the other book on 12c, Installation and Administration, gives you any idea. I had to search for this youtuber (RebellionRider) whose channel had a tutorial that did in 10 minutes what several chapters in the book could not.