Implementation
Build an API
Your application receives a documented API for controlled reading and modification of one defined data area.
Implementation / Backend development & data architecture
VAT-exempt under section 19 of the German VAT Act
Build or extend a database
A new data area receives a clear structure, relationships and rules, with a verifiable schema change.
US$2,249.00
Total price · one-offVAT-exempt under section 19 of the German VAT Act
- Model one data area with up to five tables or comparable entities
- Define relationships, required fields and agreed data rules
- Implement one versioned schema change and appropriate indexes
Your enquiry is non-binding. An order is created only when you accept our quotation .
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Service scope
Your result
- An implemented data model for the agreed area
- Versioned schema change, test evidence and clear documentation
Included
- Model one data area with up to five tables or comparable entities
- Define relationships, required fields and agreed data rules
- Implement one versioned schema change and appropriate indexes
- Test migration on test data and document the data model
Excluded
- Complete data platform, data warehouse or system migration
- Cleanup and migration of a large historical dataset
- New interface, complete API or ongoing database operation
Which projects does this service suit?
Suitable if …
- An application needs a new structured data area
- Existing tables need targeted extension for a defined function
Not suitable if …
- Unresolved datasets should be transferred without business mapping
- A complete organisation-wide data architecture is needed
What this covers
How do we store data so the application can work with it?
A data model describes stored information and its relationships. A customer may have several enquiries; an enquiry belongs to a project. The package models one limited data area and implements it in the existing technical environment.
Rules matter too: which details are required, what must be unique and what happens when a record is removed? These decisions are clarified with the business. The schema change is versioned and tested with suitable data. Large legacy-data transfers are separate work.
Relationships and rules prevent contradictory data
A collection of tables is not yet a sound model. Relationships must fit real processes. If a case may belong to several projects, that relationship must be explicit. Unclear rules are not hidden in arbitrary free-text fields.
Constraints such as uniqueness and required values support data quality. Indexes help intended queries but also have costs. Implementation follows the agreed area and its use, not a blanket collection of as many tables as possible.
Does this sound familiar?
A new function needs structured data
Storage must fit processes before interface development. We jointly define objects, relationships and required details.
Information is duplicated inconsistently
Duplicated details make changes harder. A targeted model defines ownership and relationships for the agreed area.
Schema changes are not traceable
Manual changes are hard to repeat. Versioned migration makes intended structure and application verifiable.
How we approach it.
Describe objects and relationships
We use specific examples and clarify uniqueness, required values and deletion behaviour. Scope remains limited to the agreed data area.
Develop schema and migration
The model is implemented using existing database technology. Relationships, rules and suitable indexes are created with a versioned change.
Test the change with isolated data
Migration and typical access are checked on isolated data. Handover and documentation explain the model, assumptions and intended application method.
After handover
A new schema does not automatically improve old data. Incomplete or contradictory existing values need separately planned cleanup and mapping.
Implementation covers one area within the existing system. Backup operation, high availability and a complete database architecture are not automatically set up.
Describe the intended function and an example of a successful process. Name existing systems and the roles involved without sharing real customer data or credentials.
After your enquiry, we clarify which data the function processes, which rules it must follow and which systems it must contact. Required documents and test access are agreed separately.
Terms used in this service
What does that mean?
- data model
- The description of stored objects and their relationships. It connects business concepts such as customer or enquiry with a technical structure.
- Schema migration
- A versioned change to database structure. It describes clearly how tables, fields or rules are created and adjusted.
- Index
- An additional data structure supporting particular access patterns. It can speed up suitable queries but consumes storage and must be maintained with changes.
Before your enquiry
Questions about the offer.
What is included, what do you need and what happens after your enquiry?
The process in detail →Which database is used?
We review the existing environment and use suitable existing technology if it meets the task. Changing systems requires a separate justified commission.
Is transferring old data included?
The schema change is tested with test data. Larger historical transfers, cleanup and business mapping belong to the separate migration offer.
Is production data changed directly?
Development uses isolated test data. Applying migration in production requires an expressly agreed procedure with backup and rollback planning.
Do we still need an API afterwards?
An API may be needed for controlled access by other application parts. Its development is not automatically part of the data model.
Are deletion rules included?
Technical deletion behaviour is defined for agreed relationships. You must approve the business retention periods and legal requirements underlying it.
When does work begin?
We confirm the start and delivery deadline in writing after reviewing your documents. The agreed scope and complete source data determine the schedule.
Which access is needed?
An existing technical environment and specific data examples Business rules for relationships, retention and permitted changes Credentials must not be included in the enquiry. Details are agreed only after written commissioning.
What happens after handover?
One written follow-up round is included. The service scope lists the analyses, designs or technical changes covered by the package. We agree additional work with you before it begins.
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