Protocols determine how data is transmitted between computing devices and over networks. There are 4 main protocols for SQL Server: Shared Memory, Named Pipes, TCP/IP, and VIA. Shared Memory is simplest, allowing connection only on the same computer. Named Pipes is for local area networks using portions of memory to pass information. TCP/IP is most widely used over the internet and requires the most configuration. VIA worked with specialized hardware and is no longer used with SQL Server 2012.

2. Protocols

3. Protocols
What is a Protocol ?

4. Protocols
What is a Protocol ?
 A uniform set of rules that enable two devices to connect
and transmit data to one another.
 Protocols determine how data are transmitted between
computing devices and over networks.

5. Protocols
Protocols of SQL Server – 4 Types

6. Protocols
Shared Memory

7. Protocols
Shared Memory
Shared Memory :
 The simplest protocol to use, with no configurable settings.
 Clients using the shared memory protocol can connect only to a
SQL Server instance running on the same computer.
 This is helpful for troubleshooting when you suspect that
other databases are configured incorrectly

8. Protocols
Shared Memory Named Pipes
Named Pipes:
 A protocol developed for LANs.
 A Portion of memory is used by one process to pass information to
another process, so that the output of one is the input of the other.

9. Protocols
Shared Memory Named Pipes TCP/IP
TCP/IP
 The most widely used protocol over the internet.
TCP/IP can communicate across interconnected networks.
 It requires the most configuration effort,
but most networked computers are already properly configured

10. Protocols
Shared Memory Named Pipes TCP/IP VIA
VIA (Virtual Interface Adapter)
 A protocol that works with VIA hardware.
 This is a specialized protocol.
configuration details are available from hardware vendor
Note : The VIA no longer exists with SQL Server 2012

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