Free Esri EGMP2201 Practice Exam with Questions & Answers | Set: 2

 Understanding the Scenario:

Editors need to isolate their edits so that changes are not immediately visible to others.

Edits must bereviewed before becoming public, indicating a requirement for a structured approval process.

The organization aims to reduce the number of RDBMS users, which suggests centralized management of access and permissions.

 Editing Models Overview:

Branch Versioning:Designed for web-based workflows and does not require direct RDBMS access for each editor. However, edits made in branch versioning are inherently collaborative and are not isolated unless explicitly controlled through a branch-per-user workflow, which adds complexity.

Traditional Versioning:

Supports isolated editing through private versions.

Editors can create their own versions, make changes, and submit them for review by reconciling and posting to the default version.

Direct access to the RDBMS is centralized, reducing the need for individual RDBMS users.

Nonversioned Editing:Does not support isolated edits or versioned workflows, making it unsuitable for this scenario.

 Steps to Implement Traditional Versioning:

Register the feature class asversionedin the enterprise geodatabase.

Allow editors to createprivate versionsfor making isolated edits.

Implement a workflow for reconciling and posting edits after review.

 References:

Esri Documentation: Traditional Versioning.

Versioned Editing Best Practices: Guidelines for isolating and reviewing edits.

 Why the Correct Answer is B:Traditional versioning meets all requirements: it isolates edits, allows for review before posting, and reduces the number of RDBMS users through centralized version management. Branch versioning is web-centric and lacks the structured review process, while nonversioned editing does not support isolation or versioning.

To minimize the number of rows created in the database while performing versioning workflows (loading, quality checking, reconciling, and posting),Traditional versioning without the archiving optionis the best choice.

1. Traditional Versioning Without Archiving

This method stores edits indelta tables(Adds and Deletes) rather than directly in the base table.

Without the archiving option, the system does not create additional rows to track historical changes, which helps reduce the number of rows.

2. Why It’s Ideal for This Workflow

Load Data: Data is directly inserted into the delta tables, keeping base tables untouched.

Quality Verification: Edits can be reviewed and adjusted without additional overhead.

Reconcile and Post: Only the changes made during the session are pushed to thedefault version, and unnecessary rows are avoided.

3. Why Not Other Options?

Traditional Versioning with Archiving Option:

Archiving tracks historical changes, creating additional rows for each edit in the archive tables. This increases storage and processing overhead.

Branch Versioning:

Branch versioning stores all changes in a single table and is designed for web services workflows. It may not minimize row creation compared to traditional versioning.

Steps for the Workflow:

EnableTraditional Versioningfor the target dataset without enabling archiving.

Load the large dataset into a new version created for this purpose.

Verify the data quality by querying and editing the version.

Reconcile the version with the default version, resolve conflicts, and post changes to default.

References from Esri Documentation and Learning Resources:

Understanding Traditional Versioning

Archiving in Enterprise Geodatabases

Branch Versioning vs. Traditional Versioning

Conclusion:

UsingTraditional versioning without the archiving optionensures the creation of the fewest number of rows while maintaining data integrity and supporting the described workflow.

To ensure that editing and public usage do not affect each other, the best approach is tocreate separate database instancesfor these purposes.

1. Why Separate Database Instances?

Performance Isolation: Separating the databases ensures that editing operations (which are resource-intensive) do not impact the performance of queries or map services used by the public.

Workload Management: Editors can work in a dedicated environment with optimized settings for editing, while the public-facing database can focus on efficient querying and read-only access.

Security and Data Integrity: Public users are isolated from the editing environment, reducing the risk of unauthorized changes or accidental data loss.

2. How Separate Instances Work

Primary (Editing) Database: This instance supports editing workflows, including versioning, replication, and real-time updates.

Replica (Public) Database: A replicated copy of the primary database is maintained for public usage. Updates can be synchronized periodically using one-way or two-way replication.

3. Why Not Other Options?

Build New Feature Datasets:

Feature datasets organize related feature classes but do not separate editing and querying workloads. Performance issues would persist.

Separate Permissions for Public Services:

While restricting permissions helps secure data, it does not address performance issues caused by concurrent editing and public queries on the same database instance.

Steps to Create Separate Instances:

Set up aprimary database instancefor editing workflows.

Create areplica database instancefor public use by:

Using one-way replication to push updates from the primary to the public database.

Configuring the replica as read-only for public access.

Monitor and optimize each instance independently to ensure optimal performance.

References from Esri Documentation and Learning Resources:

Geodatabase Replication for Distributed Workflows

Managing Performance in Enterprise Geodatabases

Conclusion:

Creatingseparate database instancesensures optimal performance by isolating editing workflows from public usage, addressing both performance and security concerns.

Scenario Overview:

A one-way replica from parent to child geodatabase is created for a single feature class.

The data owner adds anew attribute fieldin the parent geodatabase, calculates values, and attempts to synchronize the replica.

The new field and its values do not appear in the child replica, even after manually adding the field to the child geodatabase.

Why Recreate the Replica?

The issue arises becauseschema changes(e.g., adding new fields) are not automatically propagated in one-way replication workflows. Synchronization only applies to data changes, not schema updates.

To ensure the schema changes are recognized, thereplica pair must be recreatedwith the updated schema.(ArcGIS Documentation: Geodatabase Replication and Schema Changes)

Steps to Resolve the Issue:

Unregister the Replica:Remove the existing replica pair from both the parent and child geodatabases.

Recreate the Replica:Create a new one-way replica between the parent and child geodatabases. This new replica will include the updated schema.

Synchronize Changes:Perform synchronization to transfer data, including the new field and calculated values, to the child geodatabase.

Alternative Options:

Option A:Enabling replica tracking does not address schema synchronization and would not resolve the issue.

Option B:Running Feature Compare is helpful for analyzing schema differences but does not propagate schema changes.

Thus, the data owner mustunregister the replica pairs, recreate the replica with the updated schema, and synchronize changesto resolve the issue.

 Understanding the Scenario:

The feature class cannot havearchiving enabled.

Archiving tracks changes over time and requires specific configurations in versioned datasets.

 Key Constraints for Enabling Archiving:

Archiving can only be enabled for feature classes registered asversioned without moving edits to base.

Versioned with move edits to base:This configuration directly edits the base table, bypassing the delta tables (adds and deletes) used in traditional versioning. Since archiving relies on delta tables to track changes, this configuration is incompatible with archiving.

Branch Versioned with Editor Tracking:Branch versioning supports editor tracking and web-based workflows but does not currently support archiving.

 Steps to Correct the Configuration:

Re-register the feature class asversioned without moving edits to base.

Enable archiving after re-registration.

 References:

Esri Documentation: Archiving Requirements.

Versioning and Archiving Compatibility: Best practices for configuring datasets for archiving.

 Why the Correct Answer is B:When a feature class is registered asversioned with move edits to base, it does not maintain delta tables, making it incompatible with archiving.

In traditional versioning within an enterprise geodatabase, theDefaultversion often represents the published state of the database. Setting the Default version toprotectedensures that while all users can view it, only the geodatabase administrator or the version owner can edit it directly or post changes to it.

ArcGIS Pro

In the scenario provided, the editor follows these steps:

Default Version Set to Protected:This restricts editing and posting privileges to the geodatabase administrator or the version owner.

Creation of a Child Version from Default:The editor creates a new version branching from Default.

Child Version Set to Protected:This means only the editor (as the owner) or the geodatabase administrator can edit this child version.

Edits Saved to the Child Version:The editor makes and saves changes within this child version.

Attempt to Reconcile and Post to Default:The editor successfully reconciles but encounters an error during the post operation.

The error during the post operation arises because, with the Default version set to protected, the editor lacks the necessary permissions to post changes directly to it. Only the geodatabase administrator or the owner of the Default version possesses the authority to perform this action.

ArcGIS Pro

Analysis of Options:

Option A:Changing the access level of the child version from protected to public does not grant the editor the required permissions to post to the protected Default version.

Option B:Requesting the owner of the Default version (typically the geodatabase administrator) to perform the reconcile and post is appropriate. This individual has the necessary permissions to post changes to the protected Default version.

Option C:Creating a one-way replica and synchronizing is an unnecessary and complex approach for this situation.

Therefore, the editor shouldask the owner of Default to perform the reconcile and postto ensure the changes are integrated into the Default version.

Comprehensive Detailed Step-by-Step Explanation with All Enterprise Geodata References:

AnEnterprise geodatabaseis the most appropriate choice for this scenario due to the following reasons:

1. Requirement to Store Data Locally on Organization's Servers

AnEnterprise geodatabaseallows organizations to store GIS data locally in their own database management systems (DBMS), such as PostgreSQL, SQL Server, or Oracle.

This meets the requirement of maintaining control over data storage and ensuring the data resides within the organization's infrastructure.

2. Editing GIS Data via Web Services

Enterprise geodatabases seamlessly integrate with ArcGIS Server, enabling data editing via web services.

Organizations can publish feature services to allow authorized users to edit GIS data in real-time or in a disconnected environment (via sync).

These services support advanced editing workflows, including versioning and conflict resolution.

3. Indexing Specific Business Fields for Performance

Enterprise geodatabases offer robust indexing options to enhance query and editing performance.

You can:

Create attribute indexeson fields that are frequently queried.

Usespatial indexesto improve the speed of spatial queries.

This level of customization helps meet the performance demands of specific business workflows.

4. Advantages Over Other Storage Options

File Geodatabase:

While it is suitable for smaller datasets and local storage, it does not support multi-user editing, integration with web services, or advanced indexing for business fields.

Hosted Relational Database:

This option is part of ArcGIS Online or ArcGIS Enterprise managed services and stores data in the cloud, which contradicts the requirement for local storage.

It also does not provide the same level of control or indexing capabilities as an enterprise geodatabase.

References from Esri Documentation and Learning Resources:

Enterprise Geodatabases—ArcGIS Pro Documentation

Configuring Indexes in Geodatabases

Publishing Feature Services for Editing

Conclusion:

AnEnterprise geodatabasenot only meets all the stated requirements (local storage, web service editing, and indexed fields for performance) but also provides additional scalability, security, and multi-user editing capabilities.

When users experience performance issues while adding data from child versions in a complex traditional version tree, it often indicates problems with thebase tables. TheAnalyze Base Tables For Selected Datasetsparameter is the most relevant in this case.

1. Role of Base Tables in Traditional Versioning

In traditional versioning, thebase tablestores the original data for the feature class or table. Changes made in child versions are tracked in delta tables (Adds and Deletes).

If the base table is not optimized (e.g., outdated statistics, fragmented indexes), performance can degrade when querying or rendering data.

2. Why Analyze Base Tables?

TheAnalyze Base Tables For Selected Datasetsparameter evaluates and updates the database statistics for the base tables to improve query optimization.

This process ensures the database query optimizer can make efficient decisions when retrieving data.

3. Why Not Other Options?

Include System Tables:

This analyzes geodatabase system tables, which are crucial for administrative tasks but unrelated to performance issues with user datasets.

Analyze Archive Tables For Selected Datasets:

This is specific to datasets with archiving enabled. There is no mention of archiving being used in this scenario.

Steps to Analyze Base Tables:

OpenArcGIS Proor use a Python script with theAnalyze Datasetstool.

Specify the datasets with performance issues.

Select theAnalyze Base Tables For Selected Datasetsparameter.

Run the tool and monitor the updated statistics.

References from Esri Documentation and Learning Resources:

Analyze Datasets Tool

Improving Query Performance

Conclusion:

TheAnalyze Base Tables For Selected Datasetsparameter should be used to update statistics and improve performance when adding data from child versions in traditional versioning.

 Understanding the Scenario:The GIS administrator lacks database administrator credentials but requires an enterprise geodatabase for vector data storage. In this setup, the database administrator (DBA) is responsible for preparing the database, including setting up users and permissions, while the GIS administrator is tasked with enabling it as an enterprise geodatabase.

 Tool Selection Overview:

Create Feature Dataset:This tool is for creating a logical grouping of related feature classes inside an existing geodatabase. It is unrelated to enabling or creating an enterprise geodatabase.

Enable Enterprise Geodatabase:This tool is used when a database has already been created and configured by the DBA, and the GIS administrator needs to enable it as an enterprise geodatabase. It adds geodatabase system tables and functionality to the database. This aligns with the scenario described.

Create Enterprise Geodatabase:This tool creates a new database and configures it as an enterprise geodatabase in one step.However, this tool requires database administrator credentials, which the GIS administrator in this scenario does not have.

 Key Steps to Enable an Enterprise Geodatabase:

Preparation by DBA:The DBA sets up the database, ensuring the appropriate users and permissions are in place. They also provide connection details to the GIS administrator.

Using the Enable Enterprise Geodatabase Tool:

Navigate toArcGIS ProorArcGIS Enterprise tools.

Open theEnable Enterprise Geodatabasetool.

Specify the database connection file for the target database.

Provide the authorization file (a valid ArcGIS Server Enterprise license file) to enable geodatabase functionality.

Execute the tool to add system tables, stored procedures, and geodatabase functionality to the database.

 References:

ArcGIS Pro Documentationon Enable Enterprise Geodatabase.

Esri Enterprise Geodatabase Concepts: Official Esri documentation provides comprehensive details on the role of DBAs and GIS administrators in setting up enterprise geodatabases.

ArcGIS Enterprise Licensing Guide: Detailed information about authorization files for enabling geodatabases.

 Why the Correct Answer is B:The tool “Enable Enterprise Geodatabase” is specifically designed for situations where the database setup is handled by a DBA, and the GIS administrator is responsible only for enabling geodatabase capabilities. Since the GIS administrator does not have DBA credentials, they cannot use the “Create Enterprise Geodatabase” tool, which would require those credentials to create and configure a new database.