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Instructor Notes This module provides students with an introduction to Microsoft® Web Storage System schema and explains how the schema promotes interoperability and reuse by using its p

Contents

Overview 1

Lab A: Extending the Web Storage

Review 25

Module 2: Examining Web Storage System Schema

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Instructor Notes

This module provides students with an introduction to Microsoft® Web Storage System schema and explains how the schema promotes interoperability and reuse by using its properties, namespaces, and content classes Creating custom schemas is also covered Module lecture content and learning objectives are reinforced by a hands-on lab, Lab A, Extending the Web Storage System

Schema

After completing this module, students will be able to:

! Describe how schema properties, namespaces, and content classes function

to define Web Storage System schema

! Create a custom schema

Materials and Preparation

This section provides the materials and preparation tasks that you need to teach this module

Required Materials

To teach this module, you need the following materials:

! Microsoft PowerPoint® file 2019A_02.ppt

! Module 2, “Examining Web Storage System Schema”

! Web Storage System Explorer tool is required for the "Using the Web Storage System Explorer" demonstration

Preparation Tasks

To prepare for this module, you should:

! Read all of the materials for this module

! Complete the lab

! Read the topics in the Exchange 2000 software development kit (SDK) that discuss Web Storage System schema

Presentation:

45 Minutes

Lab:

20 Minutes

iv Module 2: Examining Web Storage System Schema

Discussion

This section provides discussion notes that will not fit in the margin notes or are not appropriate for the student notes

Discussion: Default Properties and Namespaces

The objective of this instructor-led group discussion is to introduce the students

to some of the more common default properties and namespaces that are available in Web Storage System schema The goal is to present how the properties are used in different circumstances You do not need to discuss in detail how to implement these properties; just give an overview of property function

Begin by defining the properties in the "DAV:" namespace Mention that the

values for many of the properties in the "DAV:" namespace do not have to be set explicitly because they are automatically assigned values by the Web

Storage System Discuss how the properties of the "DAV:" namespace are

defined by Internet standards organizations to promote interoperability between applications and platforms

Define the "http://schemas.microsoft.com/exchange" namespace as a set of

properties implemented by Microsoft Exchange 2000 Server Note that these properties can have predefined programming enumerations associated with them that you can use when you set the value For example, the

http://schemas.microsoft.com/exchange/sensitivity properties can be

represented by the CdoSensitivityValues Collaboration Data Objects (CDO)

enumeration

Ask for an example of a registered domain name used by a student’s company, and create some examples of property names such as

http://schemas/domainname/propertyname

When discussing the "urn:schemas:calendar", "urn:schemas:contacts",

"urn:schemas:httpmail", and "urn:schemas:mailheader" namespaces, discuss how the properties are defined by Internet standards organizations

Discuss the difference between the "urn:schemas:httpmail" and the

"urn:schemas:mailheader" namespaces The properties for the

“urn:schemas:httpmail” namespace are expressed as Unicode characters and the properties for the “urn:schemas:mailheader” namespace are expressed as ASCII characters

When discussing the "http://schemas.microsoft.com/exchange/events/" and

"urn:schemas-microsoft-com:office:forms" namespaces, define event registrations and Web form registrations Explain how to use these properties to create a decision table Mention that you will be going into greater detail about how to use the properties in these namespaces in later sections

When discussing the microsoft-com:xml-data", microsoft-com:datatypes" and "urn:schemas-microsoft-com:exch-data"

"urn:schemas-namespaces, explain how to use them to create custom properties Mention that you will be going into greater detail about how to use the properties in these namespaces in later sections

When discussing the "http://schemas.microsoft.com/exchange/security/"

namespace, explain how it uses Extensible Markup Language (XML) to establish role-based security on an item or folder level (Read the article at http://www.msdn.microsoft.com/library

/default.asp?URL=/library/techart/secroles.htm)

vi Module 2: Examining Web Storage System Schema

Demonstration

This section provides demonstration procedures that will not fit in the margin notes or are not appropriate for the student notes

Demonstration: Using the Web Storage System Explorer

! Prepare for the demonstration by completing the following steps:

1 Start Exchange System Manager Create a new public folder in the Public

Folders tree and name it ExpenseReport

2 Create another public folder in the Public Folders tree and name it

ExpenseReportSchema

3 Open the Web Storage System Explorer tool

4 Type the username, password, and the URL of the ExpenseReportSchema

folder as http://localhost/public/expensereportschema

5 Select the baseschema property and set it equal to the non_ipm_subtree/schema location For example, set it to

http://localhost/public/non_ipm_subtree/schema/

6 Create a new property definition, and give it a unique name using a

namespace, such as http://schemas/domainname/expensereport/state Save the property definition as State

7 Set the data type to String and specify that the property is indexed

8 Create a new content class and give it a unique name using a namespace

such as http://schemas/domainname/expensereport/ Save the content class as Expensereport

9 Using the Web Storage System Explorer, specify that your new content

class extends the urn:content-classes:item content class

10 Add the custom property you created, http://schemas/domainname

/expensereport/state/, to the content class, and then save your changes

11 Using the Web Storage System Explorer, open the ExpenseReport folder that you created earlier

12 Set the schema-collection-ref property equal to the URL of the schema

folder you created earlier, http://localhost/public/ExpenseReportSchema

13 Explain the results of what you just did You created a schema folder and set

its baseschema property to the non_ipm_subtree/schema directory so that

you can use all the existing properties of the Web Storage System You created a new property and used a namespace to differentiate it from other properties You created a custom content class that extends the

urn:content-classes:item content class and uses the custom property that

you created earlier

Module Strategy

Use the following strategy to present this module:

! Schema Function Define the terms schema, and schema-aware application

Present Web Storage System schema as a flexible operating environment for storing, sorting, searching, and indexing resources

! Schema Structure Describe how properties and namespaces function in the Web Storage System and emphasize that each collection of properties defines a namespace List the set of default namespaces used by the Web Storage System to define resources

Present the function of content class Explain how to read and set the

content class of a resource by using the DAV:contentclass schema

property List the predefined content classes provided by Exchange 2000

Use the example of an expensereport content class to explain how to

extend a schema

! Creating a Custom Schema Use the example of an expense report to explain how to create a custom schema by appending a property and how to create a custom content class Define schema scope Present the two folder properties that are used to configure folder schema scope

Describe the procedures for creating a schema, property definitions, and content class definitions

Overview

! Schema Function

! Schema Structure

! Creating a Custom Schema

Microsoft® Web Storage System schema provides a flexible operating environment for storing, sorting, searching, and indexing resources in the Web Storage System

After completing this module, you will be able to:

! Describe the function of schema

! Describe how properties, namespaces, and content classes function to define Web Storage System schema

! Create a custom schema

The Web Storage System

schema platform allows

applications to share data

2 Module 2: Examining Web Storage System Schema

Schema Function

Mechanism for Schema-Aware Applications to Discover the Properties That are Used by Resources in the Web Storage System

A schema is a collection of properties that define all the resources, such as

folders, items, and Web files, found in the Web Storage System

Schema structure is not as rigidly enforced in the Web Storage System as it is in

a relational database system, such as Microsoft SQL Server™ Instead, a schema

in the Web Storage System is used primarily to provide a mechanism for schema-aware applications to interpret the properties that are used by a resource

in a particular application

A schema-aware application is an application that can access and modify the

schema properties associated with resources to sort, query, and index resources

in the Web Storage System

The properties that can be applied to resources in the Web Storage System are interpreted by using multiple application programming interfaces (APIs) and protocols, such as OLE DB, MAPI and Hypertext Transfer Protocol (HTTP) Microsoft Outlook® 2000 uses MAPI to communicate with resource properties in Microsoft Exchange 2000 Server

Topic Objective

To present the function of a

Web Storage System

schema

Lead-in

Schemas enable

schema-aware applications to

interpret the properties of a

resource maintained by the

Web Storage System

Note

4 Module 2: Examining Web Storage System Schema

Properties and Namespaces

http//schemas/microsoft.com/exchange Namespace

http://schemas.microsoft.com/exchange/sensitivity

http://schemas.microsoft.com/exchange/contentstate http://schemas.microsoft.com/exchange/foldersize

urn:schemas:httpmail Namespace

urn:schemas:httpmail:from urn:schemas:httpmail:to

urn:schemas:httpmail:subject urn:schemas:httpmail:hasattachment

urn:schemas:httpmail:calendar urn:schemas:httpmail:displaybcc

urn:schemas:mailheader Namespace

urn:schemas:mailheader:from urn:schemas:mailheader:content-description

urn:schemas:mailheader:content-language urn:schemas:mailheader:mime-version

Web Storage System schema namespaces consist of grouped properties

Properties

By default, the Web Storage System contains a variety of properties that describe messages, contacts, appointments, documents, and other resources stored in the Web Storage System You can use these properties to efficiently organize, index, sort, view, and search resources In addition, you can use the Web Storage System to create custom properties

Namespaces

A namespace is the unique name that is used as a prefix to the name of each

property in the group

Grouping Properties into Namespaces The illustration in the slide shows urn:schemas:httpmail:subject as the full

property name used to define the subject of a message The property belongs to the "urn:schemas:httpmail" namespace, which contains other properties that are used to define messages The "urn:schemas:httpmail" namespace also includes properties that define the recipient and sender of a message

(urn:schemas:httpmail:to and urn:schemas:httpmail:from) and a property

that indicates whether a message has an attachment

(urn:schemas:httpmail:hasattachment)

Use namespaces to uniquely identify properties that have the same name For

example, you can use a State property to refer to a country or to refer to the

state of a document in a process To differentiate between the two uses, you can

prefix each State property with a unique namespace

Determining the Namespace Prefix

The prefix to the namespace indicates whether the namespace is specific to a particular product or in agreement with Internet standards

In the Web Storage System,

schema properties that

define similar resources are

grouped into namespaces

"http://schemas.microsoft.com"

Namespaces that begin with the string "http://schemas.microsoft.com" are defined specifically for use with Microsoft products For example, the namespace "http://schemas.microsoft.com /exchange" is for Exchange 2000 and consists of fields optimized for that product You can use properties in this namespace when building applications for use with Exchange 2000

"urn:schemas"

Namespaces that begin with the string "urn:schemas" are defined by one of various Internet standards; these are registered namespaces and are generic enough to be applied to multiple products For example, the

"urn:schemas:calendar" namespace, contains properties that are defined for Internet-based scheduling and can be used by multiple tools and operating systems You can use properties from this namespace to build generic scheduling solutions for use by any type of client

6 Module 2: Examining Web Storage System Schema

Discussion: Default Properties and Namespaces

In this discussion, the instructor presents the range of properties, to define resources that are available in the Web Storage System

The objectives of this discussion are:

! To identify and describe the function of some of the common default namespaces used by the Web Storage System

! To identify some of the common properties in each namespace and define their data types and functions

Table of Default Namespaces and Properties

The following table lists a selection of the most commonly used default namespaces and properties

DAV:ishidden Indicates whether the item is designated as

hidden

DAV:iscollection Read-only Indicates whether the item is a

collection

DAV:haschildren Read-only Indicates whether the folder or

structured document item has child objects

DAV:parentname Name of the folder that contains the item

"http://schemas.microsoft.com

/exchange"

http://schemas.microsoft.com /exchange/sensitivity

Message and appointment sensitivity Use the CdoSensitivityValues enumeration to set it using values such as

cdoSensitivityNone, cdoPrivate, cdoCompanyConfidential – 0; Personal – 1; Private – 2; Company Confidential – 3

The range of default

properties available in the

Web Storage System is

extensive The table I'll be

referring to in this discussion

lists some of the more

common namespaces

and properties

Show the students where in

the SDK they can find the

definitions for the Web

Storage System properties

Namespace Property Description

http://schemas.microsoft.com /exchange/contentstate

Any text that describes the state, or status,

of an item

http://schemas.microsoft.com /exchange/foldersize

Read-only The total size, in bytes, of all of the items in a folder

"urn:schemas-microsoft-com:office:office"

com:office:office #Author

urn:schemas-microsoft-Name of the document author

com:office:office #Comments

urn:schemas-microsoft-Comments for the document

com:office:office #Pages

urn:schemas-microsoft-Status property used by Microsoft Office

2000 applications

urn:schemas:calendar:duration Duration of an appointment in seconds

urn:schemas:calendar:location Meeting location of an appointment

urn:schemas:contacts:manager Distinguished name (dn) for the contact’s

urn:schemas:httpmail:from Addressees from whom the message was

sent

urn:schemas:httpmail:subject Subject of the message

urn:schemas:httpmail:

attachmentfilename

Name of the attached file

urn:schemas:httpmail:read Indicates whether the message was read

urn:schemas:mailheader:from Addressees from whom the message was

"http://schemas.microsoft.com

/exchange/events/"

http://schemas.microsoft.com /exchange/events/EventMethod

List of events to receive event notification

http://schemas.microsoft.com /exchange/events/SinkClass

COM class identifier (CLSID) in registry format, or the programmatic identifier (ProgID), of the event sink COM class

http://schemas.microsoft.com /exchange/events/Enabled

Boolean value that indicates whether an event registration is enabled

8 Module 2: Examining Web Storage System Schema

"urn:schemas-microsoft-com:office:forms"

com:office:forms#executeurl

urn:schemas-microsoft-URL of the engine used to render a form This can be an Active Server Pages (ASP) form and Internet Server API (ISAPI) filter

com:office:forms#request

urn:schemas-microsoft-Specifies whether the form uses GET or POST request The property is case insensitive

urn:schemas-microsoft-com:

office:forms#contentclass

Content class for which the form is registered This property is case insensitive The content class is associated with a set of schemas and a set of forms

com:office:forms#browser

urn:schemas-microsoft-Specify the type of browser

or MAPI

"urn:schemas-microsoft-com:

exch-data"

data:expected-content-class

urn:schemas-microsoft-com:exch-Array of names indicating the expected content classes of items in a folder

"http://schemas.microsoft.com

/exchange/security/"

http://schemas.microsoft.com /exchange/security

XML representation of a security identifier

of the creator of the Web Storage System item

Content Classes

http//schemas/microsoft.com/exchange Namespace

http://schemas.microsoft.com/exchange/sensitivity

http://schemas.microsoft.com/exchange/contentstate http://schemas.microsoft.com/exchange/foldersize urn:schemas:httpmail Namespace

urn:schemas:httpmail:from

urn:schemas:httpmail:to

urn:schemas:httpmail:subject urn:schemas:httpmail:hasattachment

urn:schemas:httpmail:calendar

urn:schemas:httpmail:displaybcc

urn:schemas:mailheader Namespace

urn:schemas:mailheader:from urn:schemas:mailheader:content-description

urn:schemas:mailheader:content-language urn:schemas:mailheader:mime-version

urn:content-classes:message

A content class identifies the function of a resource to a schema-aware

application and associates a set of default properties to the resource For

example, the urn:content-classes:message content class defines properties

used to describe an e-mail message in an Inbox or what has posted in a public folder The content class does not limit the properties that you can associate with a resource; rather it acts like a template of properties that a resource uses

Using Predefined Content Classes

The Web Storage System schema provides many predefined content classes The following table lists some of the predefined content classes

Content class Base class for urn:content-classes:message Messages

urn:content-classes:calendarmessage Meeting requests and responses

urn:content-classes:appointment Appointments

urn:content-classes:person Contact items

urn:content-classes:folder Folders

urn:content-classes:item Any resourcein the store

urn:content-classes:document Microsoft Office documents

Exchange 2000 stores many content class definitions and property definitions as XML schemas You will learn more about XML schemas in Module 8, “Creating Documents by Using XML and XSL.”

Topic Objective

To show how content

classes can contain

properties that are spread

over different namespaces

Lead-in

The content class of an item

functions like a template of

properties that a resource

uses The illustration shows

how the content class

urn:content-classes:message uses

properties from multiple

namespaces to define the

content class

Note