To install NDB on a Nutanix AHV cluster, you need to download the QCOW2 image file of NDB from the Nutanix Support Portal and upload it to Prism Element. This image file contains the NDB software and the CentOS operating system. After uploading the image, you need to create a VM from the image and configure the network settings. Then, you need to register the NDB VM with Prism Central and enable the NDB service in the settings menu. References: Nutanix Support & Insights, Professional Services: NDB Database Cloning

Nutanix Database Automation (NCP-DB) simplifies database provisioning using predefined profiles customized to your environment. Software profiles, which are templates of the OS and database engine, allow you to maintain consistent software versions1. You then use additional profiles to customize that deployment1.

Based on the exhibit, the administrator is logged in with the Database Admin account ([email protected]), which does not have the permission to create local users on NDB. Only the Super Admin account (bsmith) has this permission, as indicated by the User type column. Therefore, the administrator needs to log out and log in again with the Super Admin account to add a new database admin as a local user to NDB. References: Nutanix Database Automation (NCP-DB) Course Details, Nutanix Database Automation (NCP-DB) Certification Details, Nutanix Database Automation (NCP-DB) YouTube Playlist, Nutanix Database Automation User Guide.

Data Access Management (DAM) policies are a feature of NDB Multi-Cluster that allows you to control the access and availability of time machine data across different Nutanix clusters. You can use DAM policies to specify which clusters can access the time machine data of a source database, and which clusters can replicate the time machine data for backup or disaster recovery purposes. DAM policies help you to optimize the storage and network resources, as well as ensure the security and compliance of your database workloads. The purpose of DAM policies is not to register multiple Nutanix clusters in NDB, as this is done by using the Add Cluster option in the NDB settings page. The purpose of DAM policies is also not to perform snapshot operations on a single Nutanix cluster, as this is done by using the Time Machine feature in the NDB dashboard. The purpose of DAM policies is also not to remove data accessibility of a time machine across all registered Nutanix clusters in NDB, as this is done by using the Delete option in the Time Machine page. References:
* Nutanix Database Management & Automation Training Course, Module 6: Managing NDB Multi-Cluster, Lesson 2: Data Access Management Policies, Slide 3: Data Access Management Policies
* Nutanix Certified Professional - Database Automation (NCP-DB) 5 Exam, Section 6: Administer an NDB Environment, Objective 6.5: Apply procedural concepts to create Data Access Management (DAM) policies

NDB High Availability (HA) is a feature that ensures the availability and reliability of the NDB management plane components, such as the API Server, the Repository VMs, and the NDB Agents. To enable NDB HA, you need to deploy at least three HA Proxy VMs on the same L2 network as the NDB Server VM. The HA Proxy VMs act as load balancers and health monitors for the NDB management plane components, and they also provide a single endpoint for accessing the NDB APIs and UI. References:
* Nutanix Certified Professional - Database Automation (NCP-DB), Section 2 - Deploy and Configure an NDB Solution
* Database (NCP-DB) Exam Blueprint Guide - Nutanix, Page 7, Objective 2.3
* Nutanix Database Management & Automation (NDMA) course, Module 2, Lesson 2.3 - NDB High Availability