- 1 What is TTL in SQL?
- 2 Does SQL have TTL?
- 3 What is history table in SQL Server?
- 4 What is RegisterAllProvidersIP?
- 5 What is CDC tool?
- 6 What is a temporal table?
- 7 What is time Live value?
- 8 What is TTL in Cosmos DB?
- 9 What is change tracking in SQL Server?
- 10 What is AGL SQL Server?
- 11 What is CDC SQL?
- 12 What is difference between CDC and SCD?
- 13 What is stretch database?
- 14 What is the recommended starting TTL value?
What is TTL in SQL?
Time to Live (TTL) is a mechanism that allows you to automatically expire database records. TTL is expressed as the amount of time data is allowed to live in the database. … The expired data is purged from disk at some point in time after its expiration date.
Does SQL have TTL?
No. You won't find that sort of stuff in any relational database system, which SQL Server is and Scylla is not. In an RDBMS, data permanence is a big thing.
What is history table in SQL Server?
The history table contains each previous value for each row, if any, and the start time and end time for the period for which it was valid. The following simple example illustrates a scenario with Employee information in a hypothetical HR database: SQL Copy. CREATE TABLE dbo.
What is RegisterAllProvidersIP?
RegisterAllProvidersIP Setting Always On availability groups sets the RegisterAllProvidersIP property to 1 in order to reduce re-connection time after a failover for clients whose client connection strings specify MultiSubnetFailover = True , as recommended.
What is CDC tool?
In databases, change data capture (CDC) is a set of software design patterns used to determine and track the data that has changed so that action can be taken using the changed data.
What is a temporal table?
What is Temporal Table? Temporal tables, also known as system-versioned tables, provide us with new functionality to track data changes. It allows SQL Server to maintain and manage the history of the data in the table automatically. This feature provides a full history of every change made to the data.
What is time Live value?
Time-to-live (TTL) is a value for the period of time that a packet, or data, should exist on a computer or network before being discarded. The meaning of TTL, or packet lifetime, depends on the context.
What is TTL in Cosmos DB?
With Time to Live or TTL, Azure Cosmos DB provides the ability to delete items automatically from a container after a certain time period. By default, you can set time to live at the container level and override the value on a per-item basis. … The maximum value for TTL is 2147483647.
What is change tracking in SQL Server?
Change tracking is a lightweight solution that provides an efficient change tracking mechanism for applications. Typically, to enable applications to query for changes to data in a database and access information that is related to the changes, application developers had to implement custom change tracking mechanisms.
What is AGL SQL Server?
An availability group listener is a virtual network name (VNN) that clients can connect to in order to access a database in a primary or secondary replica of an Always On availability group. A listener allows a client to connect to a replica without having to know the physical instance name of the SQL Server.
What is CDC SQL?
SQL Server CDC (change data capture) is a technology built into SQL Server that records insert, update, and delete operations applied to a user table and then stores this changed data in a form consumable by an ETL application such as SQL Server Integration Services (SSIS).
What is difference between CDC and SCD?
Change Data Capture (CDC), is to apply all data changes generated from an external data set into a target dataset. … Slowly Changing Dimensions (SCD), are the dimensions in which the data changes slowly, rather than changing regularly on a time basis.
What is stretch database?
Stretch Database is a new feature in SQL Server 2016, which lets you move or archive your cold data from a local SQL Server database to the Azure SQL Database transparently (without writing code for data movement) so that your local SQL Server database has less overhead in maintaining them (and hence overall increasing …
What is the recommended starting TTL value?
IP packets In the IPv4 header, TTL is the 9th octet of 20. In the IPv6 header, it is the 8th octet of 40. The maximum TTL value is 255, the maximum value of a single octet. A recommended initial value is 64.