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Die EGMP2201 -Zertifizierungsprüfung deckt eine Reihe von Themen im Zusammenhang mit dem Geodata -Management des Unternehmens ab, einschließlich Datenmodellierung, Datenqualität, Datensicherheit, Datenintegration und Datenverbreitung. Die Prüfung testet auch Kandidaten über ihre Kenntnisse der ARCGIS -Software -Suite von ESRI, einschließlich ArcGIS Enterprise, ArcGIS Online und ArcGIS Pro. Die Kandidaten müssen ein tiefes Verständnis der Prinzipien und Best Practices des Geodata -Managements des Unternehmens sowie praktische Erfahrung mithilfe von ESRI -Softwarelösungen haben.

Esri Enterprise Geodata Management Professional 2201 EGMP2201 Prüfungsfragen mit Lösungen (Q43-Q48):

43. Frage
An editor connects to an enterprise geodatabase to edit a feature class that uses traditional versioning. The editor uses the following workflow:
* The Default version is set lo protected
* A new child version is created from Default
* The child version is set to protected
* Edits are saved to the child version
* The editor tries to reconcile and post to Default
The reconcile is successful, but the post operation fails with an error. What should the editor do?

A. Create a one-way replica from the child version and synchronize to Default
B. Ask the owner of Default to perform the reconcile and post for the editor
C. Change the access level of the child version from protected to public

Antwort: B

Begründung:
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.

44. Frage
Slow performance is observed on a query of an indexed attribute on a large feature class in an enterprise geodatabase.
* A SOL trace reveals that the attribute index is not being used in the query
* The indexed attribute values have a high degree of uniqueness
* The delta tables do not have very many rows
Which tool should be used to resolve this issue?

A. Analyze Datasets
B. Rebuild Indexes
C. Compress Geodatabase

Antwort: B

Begründung:
When experiencing slow performance on a query of an indexed attribute in a large feature class within an enterprise geodatabase, and a SQL trace reveals that the attribute index is not being utilized despite the attribute values having a high degree of uniqueness and the delta tables containing few rows, the appropriate action is to rebuild the indexes.
Understanding Indexes in Enterprise Geodatabases:
Indexes are critical for enhancing query performance in databases. They allow the database management system (DBMS) to locate and retrieve data efficiently. Over time, as data is inserted, updated, or deleted, indexes can become fragmented or outdated, leading to suboptimal query performance.
ARCGIS PRO
Rebuilding Indexes:
The Rebuild Indexes tool in ArcGIS Pro is designed to rebuild existing attribute or spatial indexes in enterprise geodatabases. This process reorganizes the index structure, ensuring that the DBMS can effectively utilize the indexes during query execution.
ARCGIS PRO
Steps to Rebuild Indexes:
Access the Rebuild Indexes Tool:
In ArcGIS Pro, navigate to the Analysis tab and click on Tools.
In the Geoprocessing pane, search for and select the Rebuild Indexes tool.
Configure the Tool Parameters:
Input Database Connection: Specify the connection to your enterprise geodatabase.
Include System Tables: Decide whether to include system tables in the rebuild process. Including system tables can help maintain the overall health of the geodatabase but may increase processing time.
Execute the Tool:
Click Run to initiate the index rebuilding process. Monitor the progress and ensure the process completes without errors.
Alternative Options:
Compress Geodatabase: The Compress operation reduces the size of the geodatabase by removing redundant states and versions. While it can improve performance, it doesn't directly address index fragmentation.
Analyze Datasets: The Analyze Datasets tool updates database statistics, which helps the DBMS optimize query execution plans. However, if indexes are fragmented, analyzing datasets alone may not resolve performance issues.
Given the symptoms described-specifically, the attribute index not being used in queries-the most effective solution is to rebuild the indexes to ensure they are properly structured and utilized by the DBMS during query execution.

45. Frage
A GIS data administrator needs to restrict access to some fields in a feature class from unauthorized users.
Which method should the data administrator use?

A. Query layer
B. Layer file
C. Database view

Antwort: C

Begründung:
To restrict access to specific fields in a feature class, the GIS data administrator should use adatabase view.
1. What is a Database View?
* Adatabase viewis a virtual table created by a SQL query. It displays data from one or more tables or feature classes, but only the specified fields and rows are accessible.
* Views allow the administrator to control the fields and records visible to users without altering the underlying data.
2. Why Use a Database View?
* Provides fine-grained control over data access by limiting which fields (or rows) are visible to specific users.
* Helps enforce data security policies in multi-user environments.
* Can be shared as a read-only layer or with restricted update permissions, depending on the use case.
3. Why Not Other Options?
* Layer File:
* A layer file (*.lyr) only defines how data is symbolized and displayed. It does not restrict field access at the database level. Unauthorized users can still access hidden fields through direct database connections.
* Query Layer:
* A query layer allows for custom SQL queries when displaying data in ArcGIS but is not a security measure. Users can modify or bypass the query to access all fields.
Steps to Create a Database View:
* Use SQL to define the view, specifying only the required fields:
CREATE VIEW restricted_view AS
SELECT field1, field2
FROM feature_class
WHERE <condition>;
* Grant permissions to the view for authorized users while restricting access to the base table.
* Publish the view in ArcGIS as a read-only layer if needed.
References from Esri Documentation and Learning Resources:
* Creating and Using Database Views
* Data Security in Enterprise Geodatabases
Conclusion:
Adatabase viewis the most effective method to restrict access to specific fields in a feature class, ensuring data security while providing flexibility in data sharing.

46. Frage
A user accidentally deletes an enterprise geodatabase feature dataset.
Which technology should be used to resolve the issue?

A. High availability
B. Archiving
C. Backup

Antwort: C

Begründung:
Understanding the Scenario:
* An enterprise geodatabase feature dataset is accidentally deleted.
* The organization needs to recover the dataset to its original state.
Available Technologies:
* High Availability:High availability setups (e.g., failover systems) ensure continuous access to geodatabases during hardware or software failures. However, high availability does not restore accidentally deleted data.
* Backup:A backup is a snapshot of the geodatabase taken at a specific point in time. It allows administrators to restore deleted datasets or recover from data loss scenarios.
* Archiving:Archiving tracks historical edits in versioned geodatabases but does not provide recovery for accidentally deleted datasets.
Steps to Recover the Dataset:
* Identify the most recent backup of the enterprise geodatabase.
* Restore the geodatabase or extract the specific feature dataset from the backup.
* Verify the restored data and synchronize it with ongoing updates if necessary.
References:
* Esri Documentation: Backup and Restore.
* Best Practices for Data Protection: Guidelines for implementing regular backups to prevent data loss.
Why the Correct Answer is B:A backup is the most reliable solution for recovering an accidentally deleted feature dataset. High availability ensures uptime but does not address data recovery, and archiving tracks edits rather than preserving entire datasets.

47. Frage
An organization has a web service that must always be available. This service reads data from a feature class in an enterprise geodatabase. The GIS administrator needs to update the schema of the feature class.
Which workflow should be used?

A. Delete the spatial index
B. Disable schema locking on the service
C. Run the Alter Field geoprocessing tool

Antwort: B

Begründung:
Scenario Overview:
* The organization has a web service thatmust always be available.
* The service reads data from afeature classin an enterprise geodatabase.
* The GIS administrator needs to update theschemaof the feature class.
Why Disable Schema Locking?
* By default, ArcGIS services enforceschema lockingto ensure data consistency while the service is active. This prevents any modifications to the feature class schema (e.g., adding fields, altering attributes) while the service is running.
* Disabling schema locking allows schema updates to occur without disrupting the service's availability.
(ArcGIS Documentation: Schema Locking)
Steps to Disable Schema Locking:
* Access the ArcGIS Server Manager.
* Locate the web service and open itsservice properties.
* In the advanced settings, disable theschema lockingoption.
* Perform the required schema updates (e.g., adding fields or modifying the feature class).
* Re-enable schema locking if necessary for normal operation.
Alternative Options:
* Option B: Run the Alter Field geoprocessing tool
* This tool modifies fields but cannot execute schema changes while schema locks are active.
* Option C: Delete the spatial index
* Deleting the spatial index is unrelated to schema changes and could degrade query performance.
Thus, the correct workflow is todisable schema locking on the serviceto allow schema changes without disrupting the web service.

48. Frage
......

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