A data dictionary is like a bill of materials for a database; it lists all database ... hypothetical field "CustomerID" is text or numeric, create a SELECT query that references this field ...

Excel possesses formidable database powers ... There are many reasons to create relational databases. The most obvious is so you don’t repeat the same data on every spreadsheet in your workbook.

With this new relational database/table feature, this process is so easy that once it’s set up in Excel, you can extract specific data and create dozens of reports in minutes. PCWorld helps you ...

Collections are to MongoDB what a table is to a relational database (such ... massive stores of data with very complex relationships. Subscribe to TechRepublic’s How To Make Tech Work on YouTube ...

The heart of any relational database management system is ... Nevertheless, for the most part, the system catalog operates as an active data dictionary, particularly with regard to SQL. When a CREATE, ...