Book Image

OCA Oracle Database 11g: SQL Fundamentals I: A Real World Certification Guide ( 1ZO-051 )

By : Steve Ries
Book Image

OCA Oracle Database 11g: SQL Fundamentals I: A Real World Certification Guide ( 1ZO-051 )

By: Steve Ries

Overview of this book

<p>The Oracle Database 11g: SQL Fundamentals I exam is the first stepping stone in getting the Oracle Certified Associate Certification for Oracle Database 11g. The SQL programming language is used in every major relational database today and understanding the real world application of it is the key to becoming a successful DBA.<br /><br />This book gives you: the essential real world skills to master relational data manipulation with Oracle SQL and prepares you to become an Oracle Certified Associate. Beginners are introduced to concepts in a logical manner while practitioners can use it as a reference to jump to relevant concepts directly.<br /><br />We begin with the essentials of why databases are important in today's information technology world and how they work.<br /><br />We continue by explaining the concepts of querying and modifying data in Oracle using a range of techniques, including data projection, selection, creation, joins, sub-queries and functions. Finally, we learn to create and manipulate database objects and to use them in the same way as today's expert SQL programmers.<br /><br />This book prepares you to master the fundamentals of the SQL programming language using an example-driven method that is easy to understand<br /><br />This definitive certification guide provides a disciplined approach to be adopted for successfully clearing the 1Z0-051 SQL Fundamentals I exam, which is the first stepping stone towards attaining the OCA on Oracle Database 11g certification.<br /><br />Each chapter contains ample practice questions at the end. A full-blown mock test is included for practice so you can test your knowledge and get a feel for the actual exam.</p>
Table of Contents (20 chapters)
OCA Oracle Database 11g: SQL Fundamentals I: A Real-World Certification Guide
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Test your knowledge


  1. The relationships between tables are defined by what?

    a. Their query results

    b. The columns they have in common

    c. The number of rows they contain

    d. The number of columns they contain

  2. In an ANSI-compliant join, which clause creates the equivalence relationship needed to form a join?

    a. The SELECT clause

    b. The FROM clause

    c. The WHERE clause

    d. The HAVING clause

  3. Which of these is formed when every row of one table is joined to every row of another table?

    a. An intersecting product

    b. A union product

    c. A Cartesian product

    d. A truncated product

  4. Which of these joins is generally considered the least useful in real-world situations?

    a. A Cartesian join

    b. An equi join

    c. A natural join

    d. A multi-table join

  5. Given that two tables have 50 rows and 20 rows, respectively, how many rows would a Cartesian product of the two tables yield?

    a. 50

    b. 20

    c. 100

    d. 1000

  6. Given two tables named employee and project, which of these WHERE clauses is a correct example of a join using the table-dot notation?

    a....