synonym

I have the situation where I will have multiple companies accessing a single instance of my application, but I need to segregate their data to avoid accidentally loading data for another company, and to ease per-company database backups. Ideally, I'd like to split the data up into different databases as follows: One SQL Server database for a list of all the users, together with any tables that are common across all users / companies N number of company specific databases , each with the same schema but different data for each company. On logging in, I would dynamically select the database for

We have a very old software has been created around 10 years ago and we don't have source code. The software uses two databases, DB01 and DB02 on the same SQL Server 2012 instance. There is SQL statements such as db01..table1 join db02..table2 , but the main issue is our processes don't allow us use db02 as a name of database. The question is: how we can create an alias of for database? I was trying to use CREATE SYNONYM CREATE SYNONYM [db02] FOR [db02_new_name]; but it doesn't work for database names. Please suggest how it can be solved without patching a binary files to correct SQL

Is it possible to determine that specific terms are more important then other when creating the index (not when querying it) ? Consider for example a synonym filter: doc 1: "this is a nice car" doc 2: "this is a nice vehicle" I want to add the term vehicle to the first doc and the term car to the second doc, but I want that if later the index is queried with the word car then the first document will be scored higher then the second one and if queried for vehicle it will be the other way around. Will calling setBoost on the fields before adding them to their respective documents do the trick?