FileMaker Extra: Portals and Record Locking

FileMaker Extra Portals and Record Locking

Record and portal rows do not lock until a user begins actively editing a field or when a script performs an Open Record/Request script step.

At the point at which a user begins actively entering data (or modifying existing data), a record lock is established until such time as the user exits the record and commits or reverts the record.

It is important to keep this behavior in mind and to understand how it applies to portals. When a record is being modified and is related to other records viewed in a portal, it and the portal itself are locked; however, other users (or the same user in a different window) can navigate to one of the related records and edit it directly.

Portal rows and related records are created when the record is committed. FileMaker treats the entire set, including the parent record and all related child records, as a single transaction. It is possible to create a new parent record, tab from field to field entering data, tab into a portal and create a few rows (including potentially entering data into fields from a grandchild record), and either commit the entire batch at once or roll back and revert the entire batch. To support such functionality, FileMaker locks the entire portal for a given record.

Record locking used to be more of an issue for both users and scripts in versions before FileMaker 7. Although FileMaker 8 doesn't do away with record lockingnor would we want it to, for maintaining data integritythe behavior you need to anticipate is far more localized than in version 6 and earlier.


Part I: Getting Started with FileMaker 8

FileMaker Overview

Using FileMaker Pro

Defining and Working with Fields

Working with Layouts

Part II: Developing Solutions with FileMaker

Relational Database Design

Working with Multiple Tables

Working with Relationships

Getting Started with Calculations

Getting Started with Scripting

Getting Started with Reporting

Part III: Developer Techniques

Developing for Multiuser Deployment

Implementing Security

Advanced Interface Techniques

Advanced Calculation Techniques

Advanced Scripting Techniques

Advanced Portal Techniques

Debugging and Troubleshooting

Converting Systems from Previous Versions of FileMaker Pro

Part IV: Data Integration and Publishing

Importing Data into FileMaker Pro

Exporting Data from FileMaker

Instant Web Publishing

FileMaker and Web Services

Custom Web Publishing

Part V: Deploying a FileMaker Solution

Deploying and Extending FileMaker

FileMaker Server and Server Advanced

FileMaker Mobile

Documenting Your FileMaker Solutions



Using FileMaker 8
Special Edition Using FileMaker 8
ISBN: 0789735121
EAN: 2147483647
Year: 2007
Pages: 296

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