A database field is a repository that stores data or information within database tables. Each of these tables has containers to store the data. Fields and containers mean the same thing. You can use them interchangeably.
There are several types of database fields.
Every database field represents a distinct set of data. Every table has a container for a particular kind of data. The names of the database field thus describe the data they contain.
Database tables arrange fields in a column. Fields in a new database require figuring to aid in selecting the type of data to keep in the table.
For instance, when you build your house, you decide the number of rooms to fashion out and assign a function to each room.
So, there would be a living room for everyone to relax, kitchen for dishing/cooking activities, and other roles you choose to assign.
You assign a function to each room the same way you define a container to save all information in a student table.
Types Of Database Fields
There are various kinds of database fields. You need to specify the type of field to store in a database table. You also need to define the type of data each container will have.
Let’s assume you’re going on a journey and you have kept your household goods and furniture in separate boxes. Kitchen items will need separate storage for glasses, cutlery, and dishes.
Anytime you create record-level fields in a pedigree database, remember to define the type of record for this field. The field type dictates the kind of data people can enter into it (date, alphanumeric, numeric and more).
It can also decide the role of the field in a database. For instance, see if a particular container has an image displayed in it. When a user clicks an allowed image file type, does the field connect to another container in a separate database?
Not every field type is available for each record type.
Here are the database field types listed below and their description. We have also stated the records peculiar to each data type.
A date field has a calendar for logging to type a date into a date field.
At first, when you select a date field, the checkboxes won’t be highlighted, indicating that the container is not editable.
For you to edit the field, do any of the options listed below:
- Click the checkbox in the date field.
- Click the dropdown arrow in the field by using the calendar. Then, select the appropriate date.
- Click the space button on your keyboard.
The database displays the date as M/D/YY (a four-digit format). This presentation is irrespective of how the calendar shows the date (MM/DD/YYYY).
The regional settings for the client will determine how the dates will display in a date field.
A text field stores every digit and printable character (alphanumeric data). Users can enter a max of 32,000 characters into it a text field.
Of all fields types available, the text field is the least restrictive and common. Examples include last name, first name, city, address, notes, and more.
This checkbox field contains 1 (Yes) or 0 (No). Progeny keeps the value of a checked container in a database.
When checked, Progeny keeps a value of “1” in the database. When unchecked, Progeny then records the value “0”.
In a numeric field, only the digits from 0 to 9 can be input. However, decimals and negative numbers are allowed. Yet, other sets of characters, either special ones or alphabetic — like commas and dashes – are also allowed.
This field type can arrange information according to numeric values. A text field does not allow you to sort data based on numeric values.
This kind of database field can display an image file in any of the following formats: .tiff, .gif, .bmp, .png, and .jpg/.jpeg.
Once you select an image field, you will be required to input the kind of image you’d like to display.
Then, you navigate to the relevant image file and click it. Once you click the image file, the image will appear in the Image field.
A computed field does not allow you to enter data. Instead, it features an expression that provides an automatically computed value. This value displays when the window that contains this field becomes open.
For instance, a computed field for Present Age refers to the disparity in years between the date recorded in the current date field and the data recorded onto the date of birth field.
A dropdown field shows a preset number of items for selection by the user. And to access this list select anywhere in the container.
You can scan across the list and pick one item after the other.
For instance, you may build a dropdown field tagged “Race,” and the items present in it are American Indian, African American, Indian and more.
When editing or adding a dropdown field, the items should have the pattern with the items in the Add New Field or Edit Field dialogue box.
The arrow keys on your keyboard can help scroll back and forth the list of provided values for inclusion into the field.
When choosing from a long dropdown list of a datasheet, you can type in the few initial letters that bear the name of the item you want to select.
The list automatically renews with the items that tally with your search queries.
Lookup table field
This database field has a dropdown list that has a kind of connection. Every row in the dropdown features a pre-defined “lookup” value.
This value refers to a category of renewable data fields. They stay up-to-date.
For instance, you may build a lookup table referred to as Referring Physician. This table would enable people to pick a physician’s name in the list.
By doing so, you are connecting each of the physician’s current contact details such as pager number, phone number, ID, and institution.
To type data onto a lookup table field, select anywhere in the container to access the table. Then click the relevant value from the dropdown table.
Table summary field
Like a summary field, you can liken a table summary field to computed fields that sum up a particular column of a table.
For instance, you might build a table named Visit Information having a field in it tagged Visit date where you’ll be able to view the earliest visit date of a particular patient.
You create a table summary field with the title.
Most Recent Visit Date. The record table will display a patient’s most recent visit date with five unique visit date entries at the Visit Record Table.
The summary field
A summary field sums up the data of subordinate items (samples/individuals) of a database item (an individual, sample, or pedigree).
It offers summary data of any chosen field. It also shows a summary value as an average, minimum value, maximum value, sum, or count.
You can carry out summary calculations on each field that is not present in tables. Conditional queries function to expound exact summary figures.
Pedigree level summary fields sum up separate-level data of the users of every pedigree.
Individual-level fields sum up sample-level data of the samples connected to every user.
Sample level summary fields sum up sample-level data of the subordinate samples and the aliquots.
For instance, a pedigree level summary field may offer a value for the aggregate number of cancer cells suspected in the pedigree.
An individual level may offer a value for the number of DNA samples present. A sample level summary may give a current aggregate volume of all non-expended aliquots in the samples.
Difference Between Fields And Records
In fields, the unit of data in each entry or row is unique. However, all entries are under the same category.
For instance, in a phone book, all entries may be under the same address category, but the individual entries are unique.
In records, each content is unique in a row. A record will group fields horizontally.
For instance, in the phone book, the last name can begin a record with data in containers like name, phone number, and address.
A database field is a repository that stores data or information within database tables.
Each of these tables has containers to store the data. Every database field represents a distinct set of data.
There are several types of database fields. They include date, text, numeric, dropdown, yes/no, lookup table, table summary, and summary fields.
A date field has a calendar for logging to type a date into a date field. A text field stores alphanumeric data.
A numeric field allows the input of only numbers (0-9). An image field displays images in several formats.
A dropdown field displays several items for the user to select.
A lookup table has a dropdown list where every row in the dropdown features a pre-defined “lookup” value.
A summary field sums up the data of individual items in a database field. A table summary sums up a particular column in a table.