What is Salesforce composite resources/composite API?
In this session we are going to exploring Salesforce composite resources / composite API. Use REST API composite resources are helpful to improve application’s performance by minimizing the number of round-trips between the client and server. let us see what is composite resources.
What is primary key in Salesforce CDP?
The Primary Key lets Salesforce CDP identify uniquely a record. As records are loaded into the data source object (DSO), it can either update or create a record. Because the primary key is the basis for inserting versus updating, you must define the primary key correctly. SKU is the primary key in this product catalog.
What is the use of REST API in Salesforce?
It helps you to do multiple operations like read create update and delete Salesforce data in single callout. You can use output of one request as the input to a subsequent request response bodies and status of all these rest api requests are together returned in a single response body.
Can a key value be composite?
Definition of Composite key: A key that has more than one attributes is known as composite key. It is also known as compound key. Note: Any key such as super key, primary key, candidate key etc. can be called composite key if it has more than one attributes.
Does composite entity have primary key?
A composite primary key, also called a composite key, is a combination of two or more columns to form a primary key for a table. In JPA, we have two options to define the composite keys: the @IdClass and @EmbeddedId annotations.
Is composite key and unique key same?
A table can have more than one unique key unlike primary key. Unique key constraints can accept only one NULL value for column. Unique constraints are also referenced by the foreign key of another table. A composite key is having two or more attributes that together can uniquely identify a tuple in a table.
Is candidate key and composite key same?
Definition. A candidate key is a super key with no redundant attributes, while a composite key is a key that consists of two or more attributes that uniquely identify any row in the table. Thus, this is the main difference between candidate key and composite key.
Is composite key a weak entity?
Weak entities necessarily have composite primary keys, and referencing those weak entities in relationships will involve composite foreign keys. If you think that's a headache, you can introduce a surrogate key which will turn it into a regular entity. A surrogate key is simply a new identifying attribute.
Can we use composite key as foreign key?
A composite foreign key is a foreign key that consists of two or more columns. It is important to note that all the columns in a single foreign key must point to the same table....Table PAYMENT.Column NameCharacteristicPayment_IDPrimary KeyInvoice_IDForeign KeyStore_IDForeign KeyPayment_Date1 more row
Can a unique key be composite?
A composite unique key is a unique key made up of a combination of columns. Oracle creates an index on the columns of a unique key, so a composite unique key can contain a maximum of 16 columns.
Can a table have both primary and composite key?
So yes, a table can have a PRIMARY KEY on one column, and a composite UNIQUE INDEX or UNIQUE CONSTRAINT.
Why do we need composite key?
A composite key is a combination of two or more columns in a table that can be used to uniquely identify each row in the table when the columns are combined uniqueness is guaranteed, but when it taken individually it does not guarantee uniqueness.
Can a candidate key be a primary key?
Primary key is most important part of any relation or table. Candidate key signifies as which key can be used as Primary Key. Primary Key is a candidate key.
What is a composite key example?
Example of Composite Key Cust_Id: A customer id is provided to each customer who visits and is stored in this field. Order_Id: Each order placed by the customer is given an order id, which is stored in this field. Prod_code: It holds the code value for the products available.
What is the difference between a composite key and a composite attribute?
A composite attribute includes multiple atomic attributes such as the address field. In the case of the “address” field for an employee table it may include street no, town name, house no, Zip code. On the contrary the Composite key acts as a unique identifier that is used to identify a row from the table uniquely.
Salesforce Composite resources
In this session we are going to exploring Salesforce composite resources / composite API. Use REST API composite resources are helpful to improve application’s performance by minimizing the number of round-trips between the client and server.
What is Composite Resources
let us see what is composite resources. We have seen standard Salesforce rest apis which we use to create or update data in salesforce from an external system these API ‘s we do one at a time. Composite resources is an enhanced form of rest api which executes a series of rest api requests in a single call.
Salesforce Composite API
let’s see composite api. Composite api is having the same features of composite resources. We saw earlier it can execute series of api requests in a single call. Output of one request can be given as input to a subsequent request response bodies. Http status of the request are returned in a single response body.
Salesforce Composite Batch
The next composite resource what we are going to see is composite batch. It can execute up to 25 sub requests in a single request. Each subrequest count against the rate limits. Sub requests are independent. You cannot pass information between them sub requests execute serially in their order.
SObject Collection
This one also executes action on multiple records in one request. The request body is different from the composite. We can observe up to 200 requests get delete patch post are available and the url will handle sObjects at the end you can choose whether to roll back the entire request when an error occurs.
Salesforce Composite Tree
Creates one or more sObject trees with root records of the specified type. An sObject tree is a collection of nested, parent-child records with a single root record.
Composite Graphs
Next is my favorite composite resource which is the composite graph this was released in winter 21.