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Data Analysis Using Excel and Access

Excel is highly favored by end users because of its rich set of features and ease of use. Access is a RDBMS (Relational Database Management System) with faster processing speed on massive data and better performance on managing multiple tables. It is also good for routine work as well. They can supplement to each other forming an ideal hybrid system for data analysts who are looking for speed and flexibility.

During the class, students can learn the advanced Excel techniques, such as data consolidation, advanced lookup and database functions. They will know how to import data into Access, and how to link up tables and to crunch data using Access’s queries. The result can then be exported back to Excel for the other processing such as plotting chart, creating pivot tables or constructing dashboards.

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Example of linking Excel Tables under Access

Assuming you want to copy the information from customer table into the orders table if the company names in customer table is identical to customer name in orders table.

In Excel, you will write lookup formulas even though you know this is not an efficeint way because the number of formula will grow with the size of tables. Below is an alternative method done under Access. The steps or work will be the same disregarding the size of the tables.

1 : Import Excel tables into Access

Excel tables can be imported into Access by chooing External Data > Excel. Import wizard will then be displayed to guide you through the rest of the steps.

2 : Construct the relationship

Once the tables are in Access, the next step is to link up tables by dragging the field from one table to the other. The relationship is shown by a line joining the relating fields.

3 : Choose fields to be shown

Then you can start choosing fields to be displayed in the final table. All the work including filtering and sorting are done under query builder.

4 : Show the result

Finally, you click the run button to execute the query, result of the table will be displayed as shown in above.The query can be saved for later use if you want to repeat the same task in future.