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The authoring of the sequence tables is an essential part of developing an installer package because these tables specify the order of execution for the standard actions that control the installation process and display the user interface dialog boxes.
There are three modes of installation and two types of sequence tables for each mode.
The three separate installation modes currently supported by the installer are:
The sequence tables each have three fields: Action, Condition, and Sequence. The Action field names either a standard or custom action or a user defined dialog box or sequence the installer executes. The Condition field allows the author to specify a logical expression that controls whether an action or user-defined dialog is executed or displayed. If the Condition field is blank or contains an expression that evaluates to True, the action or dialog is executed or displayed. The action or dialog is skipped if the expression evaluates to False. The Sequence field specifies the order of execution of each action or user-defined dialog in the table.
Each of these installation modes processes the user interface sequence tables and the execute sequence tables. The user interface sequence tables are only processed if the installer was initialized with the user interface display level set to Reduced or Full. See the MsiSetInternalUI reference for more information about user interface display levels.
The user interface sequence tables typically contains standard actions related to collecting system information that are displayed to the user through the user interface. The user interface is displayed by recording the foreign keys to the names of dialog boxes in the dialog table in the Action field of the user interface sequence table. The user then has the opportunity to modify or accept the system information and begin the installation, which occurs when the execute sequence table is processed.
During a simple installation, the INSTALL top-level action is executed which in turn processes the InstallUISequence table and the InstallExecuteSequence table.
An Administrative Installation is typically initiated by a network administrator to assign and install applications for individual users and groups of users. During this type of installation, the ADMIN top-level action is executed which processes the AdminUISequence table and the AdminExecuteSequence table.
To advertise an application or feature, the installer must be initiated with the ADVERTISE action. During this type of installation the AdvtExecuteSequence table is processed.
When authoring any sequence table, it is good practice to use the sequence number for standard actions from the suggested sequences in the topics below. For standard actions which have no standard position in the sequence table such as ForceReboot, ValidateProductID, and InstallExecute, use a sequence number that is a multiple of ten to identify the action as a standard action. For custom actions, use a sequence number that is not a multiple of ten to differentiate it from standard actions in the sequence table.
For suggested action sequences for each sequence table, see the following topics:
For a detailed description of sequence tables and how standard actions are executed, see the sequence table detailed example.
**Windows Installer 3.0 and later: **
Beginning with Windows Installer 3.0, a patch package can contain the MsiPatchSequence table. This table contains all the information the installer requires to determine the sequence of the application of a small update patch relative to all other patches. For more information, see Patching and Upgrades.
Note
Merge Modules may contain Merge Module Database Tables that modify the action sequence tables of the target .msi file. Merging the module into a database can modify the information in the sequence table, but does not add these tables to the .msi file. For more information, see Authoring Merge Module Sequence Tables.
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Create sales sequences with Sales Insights - Training
Salespeople engage with multiple customers every single day. They're responsible to qualify leads, nurture opportunities and to do so they need to be laser focused and act effectively in a timely manner. Sales organizations continuously invest in ongoing training and coaching so that salespeople are familiar with best practices and operate according to the business processes recommended in their organization. Sequences help sellers align to these processes by following a predefined set of consecutive action