Internal LOBs can be used as attributes of a user-defined data type.
True
False
Internal LOBs cannot be passed as parameters to PL/SQL subprograms.
True
False
Internal LOBs can be stored in a tablespace that is different from the tablespace that stores the table containing the LOB column.
True
False
You issue the following command to create a table called
LOB_STORE
:CREATE TABLE lob_store (lob_id NUMBER(3), photo BLOB DEFAULT EMPTY_CLOB(), cv CLOB DEFAULT NULL, ext_file BFILE DEFAULT NULL) /
Identify the issue in the above script.
The table is created successfully.
It generates an error because a BLOB column cannot be initialized with
EMPTY_CLOB()
.It generates an error because
DEFAULT
cannot be set toNULL
for a CLOB column during table creation.It generates an error because
DEFAULT
cannot be set toNULL
for a BFILE column during table creation.
Identify the correct statements about the initialization of LOBs.
An internal LOB cannot be initialized in the
CREATE
TABLE
statement.The BFILE...
Oracle Advanced PL/SQL Developer Professional Guide
By :
Oracle Advanced PL/SQL Developer Professional Guide
By:
Overview of this book
PL/SQL (Procedural Language/Structured Query Language) is Oracle Corporation's procedural extension language for SQL and the Oracle relational database. Server-side PL/SQL is stored and compiled in the Oracle Database and runs within the Oracle executable. With this guide Oracle developers can work towards accomplishing Oracle 11g Advanced PL/SQL Professional certification, which is the second milestone for developers working at the Associate level. The Oracle Advanced PL/SQL Developer Professional Guide helps you master advanced PL/SQL concepts. Besides the clear and precise explanation on advanced topics, it also contains example code and demonstrations, which gives a sense of application and usage to readers.The book gives a deep insight that will help transform readers from mid-level programmers to professional database developers. It aims to cover the advanced features of PL/SQL for designing and optimizing PL/SQL code.This book starts with an overview of PL/SQL as the programming database language and outlines the benefits and characteristics of the language. The book then covers the advanced features that include PL/SQL code writing using collections, tuning recommendations using result caching, implementing VPD to enforce row level security, and much more. Apart from programming, the book also dives deep into the usage of the development tool SQL Developer, employing best practices in database environments and safeguarding the vulnerable areas in PL/SQL code to avoid code injection.
Table of Contents (22 chapters)
Oracle Advanced PL/SQL Developer Professional Guide
Credits
Foreword
About the Author
Acknowledgement
About the Reviewers
www.PacktPub.com
Preface
Free Chapter
Overview of PL/SQL Programming Concepts
Designing PL/SQL Code
Using Collections
Using Advanced Interface Methods
Implementing VPD with Fine Grained Access Control
Working with Large Objects
Using SecureFile LOBs
Compiling and Tuning to Improve Performance
Caching to Improve Performance
Analyzing PL/SQL Code
Profiling and Tracing PL/SQL Code
Safeguarding PL/SQL Code against SQL Injection Attacks
Answers to Practice Questions
Index
Customer Reviews