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Is the database snapshot always on the same server?
A database snapshot always resides on the same server instance as its source database. While database snapshots provide a read-only view of the data in the same state as when the snapshot was created, the size of the snapshot file grows as changes are made to the source database. For details, see the Feature Overview section below.
What happens when a database snapshot runs out of space?
Database snapshots consume disk space. If a database snapshot runs out of disk space, it is marked as suspect and must be dropped. (The source database, however, is not affected; actions on it continue normally.) Compared to a full copy of a database, however, snapshots are highly space efficient.
How to specify the schema of a snapshot in SQL?
Whenever you create a snapshot, regardless of its type, always specify the schema name of the table owner in the query for the snapshot. For example, consider the following CREATE SNAPSHOT statement: CREATE SNAPSHOT emp_snap AS SELECT * FROM [email protected]; Here, the schema SCOTT is specified in the query.
How are snapshot fact tables used in data warehouse?
This week we will focus on periodic snapshot fact tables. (Periodic) Snapshot fact tables capture the state of the measures based on the occurrence of a status event or at a specified point-in-time or over specified time intervals (week, month, quarter, year, etc.).
Is there support for database snapshots in SQL Server 2019?
Prior to SQL Server 2019, the source database could not contain a MEMORY_OPTIMIZED_DATA filegroup. Support for in-memory database snapshots was added in SQL Server 2019. All recovery models support database snapshots.
How to set propagation method for data changes to transactional articles?
This topic describes how to set the propagation method for data changes to transactional articles in SQL Server 2019 by using SQL Server Management Studio or Transact-SQL. By default, transactional replication propagates changes to Subscribers using a set of stored procedures for each article.
Can a schema change be mapped to a previous version?
Schema changes are not mapped to previous versions of data types. For example, if the statement ALTER TABLE ADD datetime2 column is used in SQL Server 2012 (11.x), the data type is not translated to nvarchar for SQL Server 2005 (9.x) Subscribers.