Oracle® Database Sample Schemas 10g Release 2 (10.2) Part Number B14198-01 |
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Oracle used the schema SCOTT
with its two prominent tables EMP
and DEPT
for many years. With advances in Oracle Database technology, these tables have become inadequate to show even the most basic features of Oracle Database and other Oracle products. As a result, many other schemas have been created over the years to suit the needs of product documentation, courseware, software development, and application demos.
This preface contains these topics:
Sample Schemas is for all users of the seed database, which is installed when you install the Oracle Database.
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Accessibility of Code Examples in Documentation
Screen readers may not always correctly read the code examples in this document. The conventions for writing code require that closing braces should appear on an otherwise empty line; however, some screen readers may not always read a line of text that consists solely of a bracket or brace.
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Benefits of Sample Schemas are as follows:
Continuity of context. When encountering the same set of tables everywhere, users, students, and developers can spend less time becoming familiar with the schema and more time understanding or explaining the technical concepts.
Usability. Customers can use these schemas in the seed database to run examples that are shown in Oracle documentation and training materials. This first-hand access to examples facilitates both conceptual understanding and application development.
Quality. Through central maintenance and testing of both the creation scripts that build Sample Schemas and the examples that run against the schemas, the quality of Oracle documentation and training materials is enhanced.
The Oracle Database Sample Schemas provide a common platform for examples in each release of the Oracle Database. All Oracle Database documentation and training materials are being converted to Sample Schemas environment as those materials are updated.
The Oracle Database Sample Schemas are a set of interlinked schemas. This set of schemas provides a layered approach to complexity:
A simple schema Human Resources (HR
) is useful for introducing basic topics. An extension to this schema supports Oracle Internet Directory demos.
A second schema Order Entry (OE
) is useful for dealing with matters of intermediate complexity. Many data types are available in this schema, including nonscalar data types.
The Online Catalog (OC
) subschema is a collection of object-relational database objects built inside the OE
schema.
The Product Media (PM
) schema is dedicated to multimedia data types.
A set of schemas gathered under the main schema name Information Exchange (IX
) can demonstrate Oracle Advanced Queuing capabilities.
The Sales History (SH
) schema is designed to allow for demos with large amounts of data. An extension to this schema provides support for advanced analytic processing.
Sample Schemas have been created and enhanced with the following design principles in mind:
Simplicity and ease of use. The HR
and OE
schemas are intentionally simple. They will not become overly complex by the addition of features. Rather, they are intended to provide a graduated path from the simple to intermediate levels of database use.
Relevance for typical users. The base schemas and the extensions bring to the foreground the functionality that customers typically use. Only the most commonly used database objects are built automatically in the schemas. The entire set of schemas provides a foundation upon which one can expand to illustrate additional functionality.
Extensibility. Sample Schemas provide a logical and physical foundation for adding objects to demonstrate functionality beyond the fundamental scope.
Relevance. Sample Schemas are designed to be applicable to e-business and other significant industry trends (for example, XML). When this goal conflicts with the goal of simplicity, schema extensions are used to showcase the trends in focus.
This document contains the following chapters:
This chapter describes how to install the Oracle Database Sample Schemas.
This chapter describes the fictitious company on which Sample Schemas are based.
This chapter contains diagrams of Sample Schemas.
Chapter 4, "Sample Schema Scripts and Object Descriptions"
This chapter lists the Sample Schema creation scripts and describes the Sample Schema objects.
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This section describes the conventions used in the text and code examples of this documentation set. It describes:
Conventions in Text
We use various conventions in text to help you more quickly identify special terms. The following table describes those conventions and provides examples of their use.
Convention | Meaning | Example |
---|---|---|
Bold | Bold typeface indicates terms that are defined in the text or terms that appear in a glossary, or both. | When you specify this clause, you create an index-organized table. |
Italics | Italic typeface indicates book titles or emphasis. | Oracle Database Concepts
Ensure that the recovery catalog and target database do not reside on the same disk. |
UPPERCASE monospace (fixed-width) font |
Uppercase monospace typeface indicates elements supplied by the system. Such elements include parameters, privileges, data types, RMAN keywords, SQL keywords, SQL*Plus or utility commands, packages and methods, as well as system-supplied column names, database objects and structures, usernames, and roles. | You can specify this clause only for a NUMBER column.
You can back up the database by using the Query the Use the |
lowercase monospace (fixed-width) font |
Lowercase monospace typeface indicates executables, filenames, directory names, and sample user-supplied elements. Such elements include computer and database names, net service names, and connect identifiers, as well as user-supplied database objects and structures, column names, packages and classes, usernames and roles, program units, and parameter values.
Note: Some programmatic elements use a mixture of UPPERCASE and lowercase. Enter these elements as shown. |
Enter sqlplus to start SQL*Plus.
The password is specified in the Back up the datafiles and control files in the The Set the Connect as The |
lowercase italic monospace (fixed-width) font |
Lowercase italic monospace font represents placeholders or variables. | You can specify the parallel_clause .
Run |
Conventions in Code Examples
Code examples illustrate SQL, PL/SQL, SQL*Plus, or other command-line statements. They are displayed in a monospace (fixed-width) font and separated from normal text as shown in this example:
SELECT username FROM dba_users WHERE username = 'MIGRATE';
The following table describes typographic conventions used in code examples and provides examples of their use.
Convention | Meaning | Example |
---|---|---|
[ ] |
Brackets enclose one or more optional items. Do not enter the brackets. |
DECIMAL (digits [ , precision ]) |
{ } |
Braces enclose two or more items, one of which is required. Do not enter the braces. |
{ENABLE | DISABLE} |
| |
A vertical bar represents a choice of two or more options within brackets or braces. Enter one of the options. Do not enter the vertical bar. |
{ENABLE | DISABLE} [COMPRESS | NOCOMPRESS] |
... |
Horizontal ellipsis points indicate either:
|
CREATE TABLE ... AS subquery; SELECT col1, col2, ... , coln FROM employees; |
. . . |
Vertical ellipsis points indicate that we have omitted several lines of code not directly related to the example. |
SQL> SELECT NAME FROM V$DATAFILE; NAME ------------------------------------ /fsl/dbs/tbs_01.dbf /fs1/dbs/tbs_02.dbf . . . /fsl/dbs/tbs_09.dbf 9 rows selected. |
Other notation | You must enter symbols other than brackets, braces, vertical bars, and ellipsis points as shown. |
acctbal NUMBER(11,2); acct CONSTANT NUMBER(4) := 3; |
Italics
|
Italicized text indicates placeholders or variables for which you must supply particular values. |
CONNECT SYSTEM/system_password DB_NAME = database_name |
UPPERCASE |
Uppercase typeface indicates elements supplied by the system. We show these terms in uppercase in order to distinguish them from terms you define. Unless terms appear in brackets, enter them in the order and with the spelling shown. However, because these terms are not case sensitive, you can enter them in lowercase. |
SELECT last_name, employee_id FROM employees; SELECT * FROM USER_TABLES; DROP TABLE hr.employees; |
lowercase |
Lowercase typeface indicates programmatic elements that you supply. For example, lowercase indicates names of tables, columns, or files.
Note: Some programmatic elements use a mixture of UPPERCASE and lowercase. Enter these elements as shown. |
SELECT last_name, employee_id FROM employees; sqlplus hr/hr CREATE USER mjones IDENTIFIED BY ty3MU9; |