A relational database contains tables that relate to each other by key values. When querying data from these related tables you may choose to select data from a single table or many tables. If you select data from many tables, you normally join those tables together using specified join criteria. The concepts of selecting data from tables and joining tables together is all about managing and manipulating sets of data. In Level 4 of this Stairway we will explore the concepts of set theory and mathematical operators to join, merge, and return data from multiple SQL Server tables.
In this free eBook Shawn McGehee offers advice on query tuning, cutting stored procedures, and system process design and implementation for high availability. Discover how to perform backup and restore operations using SQL Server Management Studio (SSMS), basic T-SQL scripts and Redgate's SQL Backup tool.
SCOM is good at monitoring the status of your servers. SQL Monitor give you a detailed view of your SQL Server instances, and databases, right across your network, however they are hosted. By using tools appropriately, for the tasks they do well, you benefit from a simpler and more comprehensive overall strategy.
In this part of the temporary data store tip series we look at using subqueries to select data as well as how to use for inserts, updates and deletes.
Learn how to manage storage/filesystems on IBM AIX - Power machines. Learn from this demo of expanding a filesytem on AIX so that your DBA's get a high level overview of how AIX storage management works.
These are tough times for businesses in the EU. Is the UK going to be in or out? Quite simply, businesses are finding it difficult to plan anything when everything is up in the air, and no one can confirm what will happen next. All of which is making many businesses wary of making a decision to invest in their IT infrastructure. Enter DevOps.
Cosmos DB delivers a wide range of advantages over traditional SQL and NoSQL-based data stores, including support for multiple consistency levels, latency and throughput guarantees, policy-based geo-fencing, automatic scaling, and multi-master replication model. However, it is a significant departure from the traditional database management and development approach that most database administrators are familiar with. Discover the offerings that you can use at no cost to gain hands-on experience with Cosmos DB.