SQL Server replication is a technology for copying and distributing data and database objects from one database to another and then synchronizing between databases to maintain consistency and integrity of the data. Article/Publications An article is the basic unit of SQL Server Replication. An article can consist of tables, stored procedures, and views. A Publication... » read more
When using the full recovery model backup option, transactional logs will be generated every time there is a transaction being made. The transaction log will keep accumulate until a full, differential, transaction log backup has been made. Only then will the logs be cleared up. In databases where there are high transaction being made, the... » read more
Indexes are used to speed-up query processes in a database. They are similar to an index for a book. If you need to go to a particular chapter you can go to the index, find the page number of the chapter and go directly to the page. Database index works the same way. If you... » read more
1. Use SET NOCOUNT ON SQL Server return information messages when running statements thus increasing network traffic. These messages can be suppressed by setting the NOCOUNT ON to decrease network traffic. 2. Use fully qualified procedure name A fully qualified object name is server.database.schema.objectname. SQL Server can swiftly find the complied plan instead of looking... » read more
SSRS, SSIS, and SSAS are all products/services offered by Microsoft. Different services comes in different editions. SQL Server Reporting Services (SSRS) Provide a framework of reporting mechanisms such as the Report Builder, Report Designer, Report Manager, and Report Server that work together through a web interface to enable the development of interactive reporting solutions. Report... » read more
There are two database backup options you can set for the database. Full Recovery Model Simple Recovery Model Full recovery model allows you to restore your database to the last time a transaction was made to the database by using transaction logs. Simple recovery model only allows you to restore your database since the last... » read more
Full backup is a full copy of your entire data set. They are time-consuming and often require a lot of disk space. Differential backups only backup up the data that has changed since the last full backup. If you have a full backup on Sunday and differential backup every week day nights, you only need... » read more
Indexes are used to speed-up query processes in a database. They are similar to an index for a book. If you need to go to a particular chapter you can go to the index, find the page number of the chapter and go directly to the page. Database index works the same way. If you... » read more
Transactional Database Analytical Database OLTP OLAP Operational Systems Data Warehousing Original source of data Data comes from varies sources Large number of transactions. Low number of transaction. Very fast query processing Queries are often very complex and involve aggregations Detailed and current data, and schema is the entity model (usually 3NF) Aggregated, historical data, stored... » read more