Contents
What are design patterns to support custom fields in a database?
Database table is inefficient, size-wise with many extraneous fields that will never be used. Number of custom fields allowed needs to be anticipated. Option 2 pros: Fast to implement.
What happens when you change the name of an object in a database?
When you rename a database object, such as a field, table, form, or report, you usually want the name change to be propagated throughout the database. Otherwise, objects that reference the old name will not work as expected. Access provides the Name AutoCorrect feature, which helps propagate the name changes.
How can I change the format of a field?
In the Navigation Pane, right-click the table that contains the field whose display format you want to change, and then click Design View on the shortcut menu. The table is opened in Design view. Click the field whose display format you want to set. Under Field Properties, on the General tab, click the Format box.
How to create custom fields in a table?
That table would also have a CustomerID, a CustomFieldID. CustomFieldID would be an ID from another table called CustomField with these columns: CustomFieldID, FieldName, FieldValueTypeID. Option 4: Add a CustomerCustomFieldValue table with a column of each possible value type and store values in the right column.
How are constraints defined in a data store model?
Constraints are defined in the schema and imposed on any data in the database. Data requires high integrity. Indexes and relationships need to be maintained accurately. Data requires strong consistency. Transactions operate in a way that ensures all data are 100% consistent for all users and processes.
How to choose the right data store for your requirements?
Selecting the right data store for your requirements is a key design decision. There are literally hundreds of implementations to choose from among SQL and NoSQL databases. Data stores are often categorized by how they structure data and the types of operations they support. This article describes several of the most common storage models.
Which is better to store different types of data?
Instead, it’s often better to store different types of data in different data stores, each focused toward a specific workload or usage pattern. The term polyglot persistence is used to describe solutions that use a mix of data store technologies.