- Release Notes and Announcements
- Product Introduction
- Purchase Guide
- Getting Started
- Operation Guide
- Constraints and Limits
- Usage Specifications and Suggestions
- Maintaining Instance
- Adjusting Instance Configuration
- Read-Only Instance
- Network and Security
- Account Management
- Database Management
- Parameter Configuration
- Monitoring and Alarms
- Backup and Restoration
- Log Management
- SSIS
- Data Migration
- Data Migration (Legacy)
- Best Practice
- API Documentation
- History
- Introduction
- API Category
- Making API Requests
- Backup and Restoration APIs
- RunMigration
- ModifyMigration
- DescribeMigrations
- DescribeMigrationDetail
- DescribeBackups
- DeleteMigration
- CreateMigration
- CreateBackup
- ModifyBackupStrategy
- StartIncrementalMigration
- StartBackupMigration
- ModifyIncrementalMigration
- ModifyBackupMigration
- DescribeUploadBackupInfo
- DescribeIncrementalMigration
- DescribeBackupUploadSize
- DescribeBackupMigration
- DescribeBackupCommand
- DeleteIncrementalMigration
- DeleteBackupMigration
- CreateIncrementalMigration
- CreateBackupMigration
- DescribeBackupFiles
- Instance Management APIs
- UpgradeDBInstance
- RollbackInstance
- RestoreInstance
- RestartDBInstance
- ResetAccountPassword
- ModifyDBRemark
- ModifyDBName
- ModifyDBInstanceProject
- ModifyDBInstanceName
- ModifyAccountPrivilege
- InquiryPriceUpgradeDBInstance
- InquiryPriceCreateDBInstances
- DescribeZones
- DescribeRollbackTime
- DescribeRegions
- DescribeProductConfig
- DescribeFlowStatus
- DescribeDBs
- DescribeDBInstances
- DescribeAccounts
- DeleteDB
- DeleteAccount
- CreateDBInstances
- CreateDB
- CreateAccount
- TerminateDBInstance
- RecycleDBInstance
- ModifyDBInstanceNetwork
- CloneDB
- DescribeDBCharsets
- ModifyDatabaseMdf
- ModifyDatabaseCT
- ModifyDatabaseCDC
- DescribeDBsNormal
- ModifyInstanceParam
- DescribeInstanceParams
- DescribeInstanceParamRecords
- Other APIs
- Data Types
- Error Codes
- FAQs
- Service Agreement
- General Reference
- Glossary
- Contact Us
- Release Notes and Announcements
- Product Introduction
- Purchase Guide
- Getting Started
- Operation Guide
- Constraints and Limits
- Usage Specifications and Suggestions
- Maintaining Instance
- Adjusting Instance Configuration
- Read-Only Instance
- Network and Security
- Account Management
- Database Management
- Parameter Configuration
- Monitoring and Alarms
- Backup and Restoration
- Log Management
- SSIS
- Data Migration
- Data Migration (Legacy)
- Best Practice
- API Documentation
- History
- Introduction
- API Category
- Making API Requests
- Backup and Restoration APIs
- RunMigration
- ModifyMigration
- DescribeMigrations
- DescribeMigrationDetail
- DescribeBackups
- DeleteMigration
- CreateMigration
- CreateBackup
- ModifyBackupStrategy
- StartIncrementalMigration
- StartBackupMigration
- ModifyIncrementalMigration
- ModifyBackupMigration
- DescribeUploadBackupInfo
- DescribeIncrementalMigration
- DescribeBackupUploadSize
- DescribeBackupMigration
- DescribeBackupCommand
- DeleteIncrementalMigration
- DeleteBackupMigration
- CreateIncrementalMigration
- CreateBackupMigration
- DescribeBackupFiles
- Instance Management APIs
- UpgradeDBInstance
- RollbackInstance
- RestoreInstance
- RestartDBInstance
- ResetAccountPassword
- ModifyDBRemark
- ModifyDBName
- ModifyDBInstanceProject
- ModifyDBInstanceName
- ModifyAccountPrivilege
- InquiryPriceUpgradeDBInstance
- InquiryPriceCreateDBInstances
- DescribeZones
- DescribeRollbackTime
- DescribeRegions
- DescribeProductConfig
- DescribeFlowStatus
- DescribeDBs
- DescribeDBInstances
- DescribeAccounts
- DeleteDB
- DeleteAccount
- CreateDBInstances
- CreateDB
- CreateAccount
- TerminateDBInstance
- RecycleDBInstance
- ModifyDBInstanceNetwork
- CloneDB
- DescribeDBCharsets
- ModifyDatabaseMdf
- ModifyDatabaseCT
- ModifyDatabaseCDC
- DescribeDBsNormal
- ModifyInstanceParam
- DescribeInstanceParams
- DescribeInstanceParamRecords
- Other APIs
- Data Types
- Error Codes
- FAQs
- Service Agreement
- General Reference
- Glossary
- Contact Us
This document describes the features and differences of TencentDB for SQL Server editions.
Edition Features and Differences
| Module | Feature | Dual-Server High Availability Edition | Cluster Edition | Basic Edition |
| 2008 R2 Enterprise 2012 Standard/Enterprise 2014 Standard/Enterprise 2016 Standard/Enterprise 2017 Standard/Enterprise 2019 Standard/Enterprise |
2017 Enterprise 2019 Enterprise |
2008 R2 Enterprise 2012 Enterprise 2014 Enterprise 2016 Enterprise 2017 Enterprise 2019 Enterprise | ||
| Lifecycle | Instance creation | Supported | Supported | Supported |
| Instance restart | ||||
| Billing mode change | ||||
| Instance termination | ||||
| Read-only instance creation | ||||
| Publish/Subscribe | ||||
| Specification upgrade/downgrade | ||||
| Disk capacity adjustment | ||||
| Version upgrade | ||||
| Architecture upgrade | ||||
| Instance attribute | Instance list view | Supported | Supported | Supported |
| Instance details view | ||||
| Instance renaming | ||||
| Instance remarks modifying | ||||
| Instance tagging | ||||
| Maintenance time management | ||||
| Project management | ||||
| Service availability | High availability method | Mirror HA | Always On high availability | Compute node migration + disk snapshot |
| Cross-AZ disaster recovery | Supported | Supported | Unsupported | |
| Intra-region disaster recovery | Supported | Supported | Unsupported | |
| Read-only instance removal | Supported | Supported | Unsupported | |
| Cross-AZ migration | Supported | Supported | Unsupported | |
| Backup and restoration | Full backup | Supported | Supported | Supported |
| Data backup | ||||
| Incremental backup | ||||
| Log backup | ||||
| Scheduled backup | ||||
| Manual backup | ||||
| Archive file | ||||
| Unarchived files | ||||
| Instance backup | ||||
| Multi-database backup | ||||
| Backup policy customization | ||||
| Restoration by backup set | ||||
| Restoration by time point | ||||
| Restoration by user backup set | ||||
| Backup download | ||||
| Backup task execution on replica instance | Unsupported | Supported | Unsupported | |
| Monitoring and alarms | Resource monitoring | Supported | Supported | Supported |
| Engine monitoring | Supported | |||
| Second-level monitoring | Unsupported (one-minute granularity) | |||
| Monitoring policy customization | Unsupported | Unsupported | Supported | |
| Alarm | Supported | Supported | Supported | |
| Account management | Account creation and deletion | Supported | Supported | Supported |
| Read/Write permission separation | ||||
| Admin account | ||||
| SA account | Unsupported | Unsupported | Supported | |
| Database management | Database creation | Supported | Supported | Supported |
| Database deletion | ||||
| Database cloning | ||||
| Database authorization | ||||
| Change data capture (CDC) | ||||
| Change tracking (CT) | ||||
| Database shrinking | ||||
| Data security | Security group | Supported | Supported | Supported |
| Database audit | Unsupported currently | Unsupported currently | Unsupported | |
| Network encryption | ||||
| TDE encryption | Supported | Supported | ||
| Data channel | Data sync | Unsupported currently | Unsupported currently | Unsupported currently |
| Homogeneous data migration | Supported | Supported | Supported | |
| Heterogeneous data migration | Unsupported | Unsupported | Unsupported | |
| Publish/Subscribe | Supported | Supported | ||
| Log management | Error log | Unsupported | Unsupported | Unsupported |
| Slow log | Supported | Supported | Supported | |
| Execution log | Unsupported | Unsupported | Unsupported | |
| Parameter management | Parameter update | Supported | Supported | Supported |
| Parameter history | ||||
| Parameter template | Unsupported | Unsupported | Unsupported | |
| Performance optimization | Expert service | Supported | Supported | Supported |
| Resource analysis | Unsupported | Unsupported | Unsupported | |
| Engine analysis | ||||
| Network | Classic network | Supported | Supported | Supported |
| VPC | ||||
| Public address | Unsupported | Unsupported | Unsupported |
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