Webservices Flashcards
Describe the purpose of WSDL
WSDL is an XML language used to describe web services, including communication endpoints, operations, messages, and bindings to networking protocols.
Do machines read WSDL documents?
Yes, machines can read WSDL documents to understand and invoke services defined within them.
Define SOAP RPC Response
SOAP RPC Response is an example of a response format in SOAP envelopes, containing the response data within the SOAP-ENV:Body element.
How does WSDL enable automation in communication?
WSDL enables automation by providing a standardized way to describe communication details between different parties, allowing machines to interpret and interact with services.
Describe the purpose of the Types element in WSDL
The Types element in WSDL is used to define data type definitions, particularly for describing the structure of exchanged messages using XML Schema.
Do WSDL documents use XML Schema for defining data types?
Yes, WSDL documents use W3C XML Schema as the canonical type system for defining data types in exchanged messages.
Define the operation GetLastTradePrice
GetLastTradePrice is a single operation in a WSDL document that retrieves the last trade price, typically deployed using SOAP 1.1 over HTTP.
How can a third party verify communication conformity using WSDL?
A third party can verify communication conformity by checking if the communication adheres to the standards and definitions specified in the WSDL document.
Describe the structure of a SOAP-ENV:Envelope
A SOAP-ENV:Envelope contains SOAP-ENV:Header for optional context information and SOAP-ENV:Body for the main content, such as response data.
Do WSDL documents make services discoverable through registries?
Yes, WSDL documents make services discoverable through registries, allowing third parties to find and understand the available services.
Describe the AORTA architecture.
AORTA architecture is discussed in Dutch.
What is the purpose of IHE Connectathons?
IHE Connectathons aim to test interoperability between systems based on IHE profiles.
Define SOAP Encoding.
SOAP Encoding refers to the rules of expressing application-defined data types in XML.
How does a SOAP Message Envelope structure look like?
A SOAP Message Envelope consists of encoding information, an optional header, and a body containing application data.
Describe the difference between web services and APIs.
Web services are often referred to as APIs, but APIs are more general, encompassing a set of subroutine definitions, communication protocols, and tools for software development.
Do SOAP-based web services follow the WS-* standard?
Yes, SOAP-based web services are WS-* (XML)-based, considered ‘big’ web services.
Define Web Services according to W3C.
According to W3C, a Web service is a software application identified by a URI, with interfaces and bindings defined, described, and discovered by XML artifacts, supporting interactions with other software applications via internet-based protocols.
Describe the characteristics of Web Services.
Web Services are XML-based, message-based, programming language independent, accessible over the Internet, loosely coupled, and based on industry standards.
How is the Web Service Architecture simplified?
The simplified Web Service Architecture involves a registry, web service, and service client, with all messages being SOAP messages.
Describe the process of a client interacting with a service using SOAP
Client requests service location, service is published, client calls service, and binding with underlying protocols occurs.
Define SOAP Message Format
It includes SOAP envelope, header, body, and attachments.
What is the purpose of IHE (Integrating the Healthcare Enterprise)?
To promote interoperability among healthcare and software providers, IT professionals, and governments.
How does GraphQL make versioning easier?
By allowing precise querying which can help in managing different versions of APIs.
Do you know what Vecozo is an example of?
It is an example of a SOAP message envelope with specific namespaces and elements.
Define UDDI (Universal Description, Discovery and Integration)
It is a system for businesses to list themselves on the internet and discover each other, similar to ‘White pages’, ‘Yellow pages’, and ‘Green pages’.
Describe the purpose of TCP in the context of HL7
It is used for communication, including HTTP, SSL, SOAP/XML, and handling lower protocol layers in the HL7 environment.
What problem does IHE aim to solve?
IHE aims to solve ambiguities by specifying integration profiles and organizing connectathons.
How does SOAP help in service communication?
It provides a message format with an envelope, header, body, and attachments for structured data exchange.
What is the significance of the XML fragment in the content?
It represents a part of an XML document that may be used for defining messages or data structures in various systems.
Describe the role of HIB in healthcare systems
It acts as a registry for various healthcare information, including patient data, messaging services, provider information, and more.
How does IHE promote interoperability in healthcare systems?
By advocating standards like DICOM and FHIR, specifying integration profiles, and organizing connectathons.
What are the main components of a SOAP message envelope?
It typically includes a header, body, and attachments for encapsulating data in a structured manner.
Define the purpose of GraphQL
It is a query language for APIs that focuses on precise querying and making versioning easier.
How does SOAP handle service communication?
It defines a message format with an envelope, header, body, and attachments to facilitate structured data exchange.
Describe the structure of a SOAP message
It consists of an envelope enclosing a header and a body, with the possibility of including attachments for additional data.
What is the primary function of UDDI in business contexts?
UDDI serves as a ‘White pages’ directory for businesses to list themselves and discover others based on addresses, contacts, and identifiers.
How does IHE contribute to healthcare IT standards?
IHE promotes interoperability by advocating for standards like DICOM and FHIR, specifying integration profiles, and organizing connectathons.
Do you know the purpose of the Vecozo example provided in the content?
It serves as an illustration of a SOAP message structure with specific namespaces and elements for data exchange.
Define the role of TCP in HL7 communication
TCP is used to handle communication protocols like HTTP, SSL, and SOAP/XML, managing lower layers in the HL7 environment.
Describe the significance of the XML fragment mentioned in the content
The XML fragment represents a portion of an XML document that could define messages or data structures within various systems.
Describe the purpose of UDDI in the context of Web services
UDDI defines a way to publish and find information about Web services.
Explain the steps involved in a client interacting with a Web service using UDDI
- Service Registers (PUBLISH) 2. Client Requests Service Location (FIND) 3. Client calls Service (BIND)
Define WSDL and its elements
WSDL stands for Web Service Description Language. Elements include Binding, Port, and Service which define communication endpoints, protocols, and related ports.
Differentiate between WS-* (SOAP-based), REST, and GraphQL web services
WS-* are SOAP(XML)-based ‘big’ web services, REST applies Web architecture to services, and GraphQL is a query language for APIs.
Explain the concept of REST in Web services
REST stands for REpresentational State Transfer, applying Web architecture principles like distinct resources and cacheability to services.
Describe the differences between REST and GraphQL
REST focuses on over/underfetching data, while GraphQL allows clients to request only the data they need.
List the categories of FHIR resource types according to the R5 FHIR specification
Foundation, Base, Clinical, Financial, Specialized - totaling 157 types of resources.
Explain the role of HL7 FHIR in healthcare and its use of REST
HL7 FHIR (Fast Healthcare Interoperability Resource) suggests using JSON or XML for structuring healthcare data in a RESTful manner.
Describe the concept of syntactic and semantic interoperability in the context of FHIR in healthcare.
Syntactic and semantic interoperability are defined by FHIR for seamless communication and understanding between different systems.
What is the purpose of API Keys in web services?
API Keys are used to limit access to services, issued by the provider to the client developer, and must be included in each request.
How does a SOAP weather service differ from REST services in terms of message exchange?
A SOAP weather service involves sending specific SOAP messages for actions like getting, creating, updating, or deleting data, all typically done via POST requests.
Define the role of WSDL Elements in web services.
WSDL Elements include Messages (data definitions), Operations (action descriptions), and Port Types (collections of operations) to define the structure and behavior of a service.
How are web services like Vecozo used in the context of returning data to clients?
Vecozo web services return data in XML format to clients, providing a structured way to exchange information.
How can the concept of ‘screenscraping’ be described in the context of web services?
Screenscraping is discouraged due to its brittleness, especially when layout changes, as it involves extracting data from HTML responses which can be unreliable.
What is the significance of using web services in the example provided about checking insurance status in healthcare?
Web services offer a more efficient solution compared to methods like phone calls or database lookups, enabling quick access to insurance status information for patients.
