![]() There are two types of relationships:-Lookup Relationship Master-Detail Relationship. In order effectively make SOQL queries, we would first need to understand the type of relationships available on the platform. Or the question Multi-instance SQL Server Standard Editon MaxDop settings where I show how we setup multiple insances at our shop. We construct the relationship in SOQL by using the path traversal which helps in joining the data.See my question Configure SQL Server Analysis Services (SSAS) to run on same IP as SQL Server instance for an example of how you could configure multiple instances. 10.0.0.5 which in turn would have their own CNAME: 10.0.0.1 hostnameĮach instance is then only reachable via the IP address and Port 1433 which in turn allows for IP to IP firewall configuration. Cluster servername - serverN1serverN2 1st instance. you could have your Windows Server running on 10.0.0.1 and each of your SQL Server instances running on 10.0.0.2. Old sql2k instance were using 1433 node & to avoid code changes at app side to SQL to listen same port for both instances running on cluster. You can setup the individual SQL SErver instances to only respond to one IP address which in turn is linked to a CNAME/ALIAS. Individual IP Addresses for Each SQL Server Instance This depends on your licensing model, your license agreement and probably requires additional clearance by your certified reseller / licensor. You can save on Windows Server licenses, because you only require one server license for multiple SQL Server instances. You have a separation between databases of one customer and another customer. Having multiple instances allows you to assign the sysadmin server role to individuals, without giving them the ability to destroy all the databases if they would be located on one instance. And on another instance you could even test drive the hotfix you're not sure it will work well. ![]() You can have once instance running Service Pack 1 and another instance running Service Pack 2. Having multiple instances on one (big?) server, allows you to patch the individual instances to different levels. Upgrades / Service Packs / Cummulative Updtes / Hotfixes You can have multiple instances all running on one (big?) server and not have to pay large amounts of licensing fees. The idea of having multiple instances on one server can have various reasons.
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