What is a database?

A database is software installed on a server or PC. Each database has one or more interfaces. A database user (or application) must first log on to the database system. There, the data is stored in a structured way in the form of tables. A record in a database table consists of various 1-n data fields. The individual fields can have various data types. Access to the individual tables is managed by a database management system (user rights management). Physically, the data is stored in a collection of files.

Relational databases

The relationships between the individual fields of the tables form a certain structure (a database model). The entire data stock can therefore be linked to each other. This is done through indexes and IDs between the individual fields of the data models. The data administration and management of the tables and their relationships is done by the software of the database system. The data from different tables thus form a data model. With data indexing, even large amounts of data are answered very quickly via the SQL queries.

The database language

Text-based SQL queries have become the standard language. The queries can be very complex and can be constructed between different relational tables. The amount of data returned can also contain several million records. The individual records are retrieved with a cursor. The server system of a database should have as much memory available as possible.

What databases are there?

Currently, the following databases have become established (dbms):

  • Oracle
  • MS-SQL
  • MariaDB (MySQL)
  • MS-Access
  • DB/2 (currently already very rare)

There are certainly still quite a few databases that are very special or no longer play a role. The security of the data has the highest priority.


The databases manage the amounts of data and serve as data containers. Databases are very important in logistics. They are used for customer registration, order entry, picking and dispatch or production. The relational database system manages the data objects.

All LUCA systems, such as Pick-to-Light, Voice Picking, Pick-by-Point, etc. use the databases. For more general information on picking in logistics, see the article Picking Systems.

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