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ESRIは、地理情報システム（GIS）ソフトウェアとテクノロジーのグローバルリーダーです。同社は、専門家や組織がGISテクノロジーを効果的に利用して複雑な問題を解決できるように、さまざまなコース、認定、トレーニングプログラムを提供しています。 ESRIから最も人気のある認定の1つは、エンタープライズGeodata Management Professional 2201（EGMP2201）認定試験です。

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ESRI EGMP2201認定試験は、エンタープライズジオダタベースの管理と管理における実用的な知識とスキルについて候補者をテストするために設計された複数選択の質問で構成されています。この試験は、厳密で挑戦的であると広く考えられており、候補者は主題の強力な理解を示すことを要求しています。認定プログラムは、地理空間データ管理の分野でのキャリアの進歩に関心のあるGIS専門家に強くお勧めします。

Esri Enterprise Geodata Management Professional 2201 認定 EGMP2201 試験問題 (Q12-Q17):

質問 # 12
An organization needs to edit GIS data using web services. The data must be stored locally in the organization's servers. Specific business fields must be indexed in the database to help with performance.
Which storage should be used for thedata?

• A. File geodatabase
• B. Enterprise geodatabase
• C. Hosted relational database

正解：B

解説：
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.

 

質問 # 13
AGIS data administrator needs to prepare data for use in offline workflows.
Which database operation must the data administrator perform?

• A. Enable sync
• B. Enable archiving
• C. Add global IDs

正解：A

解説：
Scenario Overview:
The GIS data administrator needs to prepare data for offline workflows.
Offline workflows allow users to take data offline for use in disconnected environments, typically for field operations.
Why Enable Sync?
Sync must be enabled on the feature service to allow offline workflows. This capability ensures that edits made offline can later be synchronized with the enterprise geodatabase.
When sync is enabled, data can be downloaded for offline use in supported applications like ArcGIS Field Maps, and changes can be synchronized back to the geodatabase.
(ArcGIS Documentation: Sync)
Alternative Options:
Option A: Enable Archiving
Archiving tracks historical edits but is not required for offline workflows.
Option B: Add Global IDs
While Global IDs are required for enabling sync, adding them alone does not fully configure the dataset for offline workflows.
Thus, to prepare data for offline workflows, the administrator must enable sync on the dataset.

 

質問 # 14
AGIS data administrator needs to migrate the enterprise geodatabase to another server and wants to have the following changes:
* New enterprise geodatabase name
* Changed Repository tables owner from SDE to DBO
Which migration workflow should be used?

• A. Create a new enterprise geodatabase
• B. Migrate Storage geoprocessing tool
• C. Restore a database backup

正解：A

解説：
To migrate an enterprise geodatabase to another server while changing its name and repository table owner, creating anew enterprise geodatabaseis the most appropriate workflow.
1. Why Create a New Enterprise Geodatabase?
* New Geodatabase Name: Creating a new geodatabase allows specifying a different name for the database.
* Change Repository Table Ownership: During the setup of the new geodatabase, the repository tables can be assigned to a new owner (e.g., DBO instead of SDE).
* Fresh Configuration: This method provides full control over database settings, structure, and ownership during migration.
2. Why Not Other Options?
* Restore a Database Backup:
* Restoring a backup would preserve the original database name and ownership settings, which conflicts with the requirement to change these configurations.
* Migrate Storage Geoprocessing Tool:
* This tool is used for changing the storage type of geodatabase tables (e.g., from binary to XML).
It is not designed for migration or renaming geodatabases or altering repository table ownership.
3. Steps to Create a New Enterprise Geodatabase:
* Create the New Geodatabase:
* Use theCreate Enterprise Geodatabasegeoprocessing tool in ArcGIS Pro or database-specific tools to set up the new geodatabase on the target server.
* Configure the repository tables to use the desired owner (e.g., DBO).
* Export Data from the Old Geodatabase:
* UseGeodatabase replication,Export to File Geodatabase, or other export tools to migrate data to the new geodatabase.
* Import Data to the New Geodatabase:
* Load the exported data into the new geodatabase using theImport/Load Datatools.
* Update Services and Connections:
* Update database connection files and any published services to point to the new geodatabase.
References from Esri Documentation and Learning Resources:
* Creating an Enterprise Geodatabase
* Migrating Enterprise Geodatabases
Conclusion:
Creating anew enterprise geodatabaseis the best method to meet the requirements of renaming the database and changing the repository table owner.

 

質問 # 15
A wells feature class has one row per well. A well_inspections table has one row for each time a well was inspected. All inspection dates need to be displayed as labels clustered around each well on the map.
Which kind of association should be used to meet this requirement?

• A. Join
• B. Relate
• C. Relationship class

正解：B

解説：
Scenario Overview:
The wells feature class has one row per well.
The well_inspections table has one row for each inspection of a well.
Inspection dates from the well_inspections table need to be displayed as labels clustered around each well on the map.
The goal is to establish a connection between these two datasets without permanently joining them, as the data is being displayed dynamically (inspection dates are clustered around the wells).
Relates in Geodatabases:
A relate is a type of table association in which tables are linked by a common key field but remain separate.
Relates allow for dynamic queries to retrieve related records without duplicating or permanently associating the data.
Using a relate, you can query all inspection dates for a specific well dynamically, display them on the map as labels, and preserve the integrity of both the wells and inspections datasets.
(ArcGIS Documentation: Relates)
Alternative Options:
Option A: Join
A join merges two tables into one virtual table, based on a shared key. However, this approach is static and inappropriate for displaying dynamically clustered labels since the tables would need to be rejoined after every update.
Option C: Relationship Class
A relationship class is a more permanent association that enforces rules between two datasets. It is ideal for maintaining relationships between data but is unnecessary for dynamically labeling inspection dates on the map.
Thus, a relate is the most efficient and appropriate option for this scenario.

 

質問 # 16
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. Compress Geodatabase
• C. Rebuild Indexes

正解：C

解説：
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.

 

質問 # 17
......

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