In our database department, we use Microsoft SQL Server for storing data, data aggregation, and manipulation. We use Reporting services tools for creating, managing and deploying reports for our clients. For creating a report definition I personally used Report Builder which makes defining data source connections, queries used to retrieve data, expressions, parameters and others extremely easy to perform. We also try to improve the performance of stored procedures, user-defined functions, and triggers by learning the execution plan in detail. One of our clients has a web app for an insurance company and they have a large amount of data stored in the Microsoft SQL Server database. Our goal is to improve performance from queries that are used in that web app, so we try controlling execution plans with hints or adding indexes. In cases when we meet a new client who already has some database storage then we use replication technology for copying and distributing data and objects from one database to another. Besides that, we also help our clients to build parameterized queries in order to defend from SQL injection which is one of the most common web hacking techniques.