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Database Management

Introduction to Database Concepts

Splitting Data Across Multiple DBs

Database Elements

Reference Number

Current Element

Change Element Types

Primary Database Hierarchy

User Defined Hierarchies

Element Instances

Where the Primary Hierarchy is Used

Secondary Hierarchies

Database Attributes

User Defined Attributes

Pseudo Attributes

Global Namespace for Attribute and Element Type Names

Attributes of Physical Quantities

Database Expressions and Rules

Dumping out the Database

Database Modifications

Data Access Control (DACs)

Errors Applicable to all Modifications

Integrity of Modifications

Element Creation

Element Deletion

Attribute Modification

Effect of Modifications on Dynamic Rules

Database Sessions

Session History

Set a Comparison Date

Multiwrite Working

Multiwrite Strategy

Release Elements

Performance Considerations

Potential Conflicts at SAVEWORK/GETWORK in a Multiwrite Environment

Create Extracts

Restrictions on Extracts

Extract Sessions

MERGE CHANGES on Extracts

Extract Claims/Releases

Extract Release

User Claims/Releases on an Extract

Extract Operations

Merge Algorithm

Dealing with Deleted Elements

Flushing Connected Items

Errors for Extract Operations

Performance Considerations

Global Propagation

Extract Claim/Release with Global

Flush with Global

Merge Changes for Global Extracts

Undo Capabilities

Backtrack/Rewind

Database Navigation and Query Syntax

Current Element

Current Position

PML DBRef Object

PML !!CE Variable

Specify the Standard Name

Specify the Constructed Name

Specify the World

Specify the Refno

Use the BACKREf attribute

Specify a Relative Position in the Hierarchy

Move within the Current Level

Move to Next Lower Level

Syntax Ambiguity Between Moving Across and Down

Climb up by Default

Use the ‘OF’ Syntax

Return to the Previous Current Element

Pseudo Attributes Relating to Navigation

Real Attributes of Physical Quantities

Values of Physical Quantities

SI Unit Prefixes

Units of Absolute and Gauge (gage) Pressures

Query Attributes

Standard Attribute Query

dot Notation in PML

Relative Positions, Directions, Orientations

Summary of Related Pseudo Attributes

Set a UDA Back to a Default

Single Value of an Array

Special Syntax for Names

Special Syntax for LOCK

Related Pseudo Attributes

PML Attribute Class

PML ElementType Class

Related Pseudo Attributes

Database Modification

Modify the Content of a DB

Create a New Element

Delete an Element

Reorganise the DB Hierarchy

Copy Attributes from One Element to Another

Save Work and Get Work

Session Comments

Multiwrite Databases Claims and Extracts

Notes on Standard Multiwrite DBs

Extract Databases

How to Find Out What You Can Claim

Related Attributes

Shared Collections (Groups) and Secondary Hierarchies

Define Contents

Delete Shared Collection

Copy a Shared Collection

Define Dynamic Shared Collections

Format of Expressions

Operator Precedence

Nesting Expressions

Logical Expressions

Logical Operators

Logical Functions

Logical Array Expressions

Numeric (Real) Expressions

Numeric (Real) Operators

ADD and SUBTRACT (+ and -)

MULTIPLY and DIVIDE (* and /)

Numeric (Real) Functions

Units and Physical Quantity Attributes in Expressions

Using IDs in Expressions

Positions, Directions and Orientations in Expressions

Compare Positions

Text Expressions

Late Evaluation of Variables in Expressions

Attributes in Expressions

Query Expressions

Precision of Comparisons

Undefined Values

Rules to Define Attribute Settings

Set Attribute Rules

Verify Attribute Rules

Execute Attribute Rules

Delete Attribute Rules

Rules for Arrays

Comparisons Across Sessions and Stamps

Query the Last Modification to an Element or Attribute

Query the Session History for an Element or Attribute

Query Details of a Specific Session

Query Session Number for a Given Time

Comparison Date

Set the Comparison Date

Query the Comparison Date

MODIFIED Function

CREATED Function

DELETED Function

GEOM, CATTEXT, and CATMOD Special Attributes

Query Any Attribute at the Comparison Date

Compare Database Changes

Revert Elements

General Features of Output Lists

Principles and Limitations

Some Examples of Output

Tabulate Option

OLDFORMAT Option

Option Combinations

Locate and Replace

Create Datal Interactively

Project Queries

Check the Current User Status

Check the Current System Status

List Project Information

Query MDB Information

Query Individual Database Information

Data Structures

Link World (LINKWL)

Link Folder (LNFOLD)

Link Descriptor (LNDESC)

Link Class (LNCLAS)

Configuring Links Hierarchy

Link a Document to a Database Element

Unlinking a Document from a Database Element

Classify a Link

Unclassify a Link

Related Pseudo Attributes

Inter-DB Connection Macros

Sequence Number Generator

Create a Name Sequence Database

Enable Usage of Name Sequences from PML

Typical Usage of Name Sequences

Name Sequences in Global Projects

Distributed Attributes

Terminology and Data

Create Distributed Attribute Group, the UDET

Create the Attributes, as UDAs

Create Distributed Attributes Schema

Default Home Definition

Create the XPIWLD Home Elements

Distributed Attributes, Configuration and Usage Details

Distributed Attributes and Default Home Configuration

DSX Hierarchy, Top Elements

Distributed Attributes Schema

Default Home Selector

New and Updated Syntax

Distributed Attributes and Attribute Syntax

Pseudo Attributes Associated with Distributed Attributes

DLIST - Eligible Distributed Attributes Members

XRLSTT - List Distributed Attributes Member Types Associated

XRLIST - List Distributed Attributes Member Associated

XRQCNT - Count of Distributed Attributes Member Associated

XRQELE - Return a Single Distributed Attribute Member

ATTDST - List of Attributes to Show

DFHOME - The Evaluated Default Home

Element Selection, Claim, Flush

Status Control Example

Copying Data between Projects

Cleanup and the CLEANUp Command