1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
malfutka [58]
3 years ago
11

Define the following terms: data model, database schema, database state, internal schema, conceptual schema, external schema, da

ta independence, DDL, DML, SDL, VDL, query language, host language, data sublanguage, database utility, catalog, client/server architecture, three-tier architecture, and n-tier architecture.
Computers and Technology
1 answer:
PolarNik [594]3 years ago
3 0

Answer:

Following are the solution to the given terms:

Explanation:

Data Model: A set of concepts that are ideal for describing the layout, computational tools, relations, semantics, constraints on accuracy.

Database Scheme: It is also known as the overall design of the database.

Database State: It is the data in the database at a particular moment in time.

Internal Schema: The physical structure of the database is defined.

Conceptual Schema: It hides the details of physical storage.

External Schema: It describes the part of the database the user group sees. In other words, we can say that it is a view of the database.

Data Independence: The ability to modify the schema at a single level while modifying the schema at a higher level is often recognized.

DDL: It stands for the Data Definition Language, which is used by DBA and dev use for creating With particular scheme.  

DML: It refers to the Data Manipulation Language, which is used to manipulate, add, recover, insert, remove, and alter data.  

SDL: It stands for the storage definition language, in which the internal schema of the database is applied for storage description.  

VDL: The view definition language specifies the user to view and mapping their conceptual schema.

Query Language: It is just an independent, dynamic, high-level dialect used during manipulation.  

Host Language: It is also the machine language, that would be incorporated into the general programming language by low-level data handling commands.  

Data sublanguage: It uses for embedding in the last language.  

Database Utility: It is a program, which helps to handle the database with DBA's modules.  

Catalog: The entire structure and constraints of the database is defined.

client/server architecture: The design of the database server system that device usability: model user, model server (landless storage) software Government computer design in which many users (remote processors) demand a central server to receive service (host computer).  

Three-tier architecture: It is the application, data, user interface.

n-tier architecture: multiple levels. The nth level must only be able to handle the n+1 application and transmit it to the n-1 point.

You might be interested in
Match the components of a blog to their descriptions.
motikmotik

Answer:

Explanation:

1. entry title - name of the posting

2. permalink - place where a blog posting is located

3. entry date - when the posting became available

4. comment - allows users to add to the conversation

3 0
3 years ago
Develetech has a security policy that mandates a basic security feature for mobile device access. What is this basic security fe
kirill [66]

Answer:A password or a PIN

Explanation: Develetech is a industry that has the a internet page and can also be used in the mobile devices. There is particular authorization that the organization provides to an individual user for accessing of the services to maintain the security .The security is maintained by providing the devices with an encrypted text that is known as the password. The user has to enter the pin or password to execute the service on device.

5 0
3 years ago
Enrico waited ten years to file a cause of action against Frederico for a breach of contract claim. Frederico can use ______ as
ser-zykov [4K]
Time, due to the amount of time between the initial action and the filing of the report, federico could claim the it didn't happen or something
3 0
3 years ago
As the project manager for a software development project, you are helping to develop the project schedule. You decide that writ
Jobisdone [24]

Answer:

The correct answer to the following question will be "Discretionary".

Explanation:

That form of dependency helps the project or development team to maximize the development process via the growth cycle of that same venture.

  • It is used by managers of the project to establish a "balance" on the timeline.
  • It has also been known as the system which makes use of the largest and most successful quality methods dependent on the team experience.

So, using this type of dependency is far better.

7 0
3 years ago
Select 3 true statements about Python class.
antoniya [11.8K]

The true statements about Python class are:

  • (In Python 3 or higher) If no class is inherited, it implicitly inherits the object class.
  • A class attribute exists as a unique object regardless of how many instances of the class are.
  • A class attribute can be used without an instance of that class.

<h3>Can Python class inherit from multiple classes?</h3>

Yes, A class is one that can be gotten from more than one base class in Python. This is known to be multiple inheritance.

Note that The true statements about Python class are:

  • (In Python 3 or higher) If no class is inherited, it implicitly inherits the object class.
  • A class attribute exists as a unique object regardless of how many instances of the class are.
  • A class attribute can be used without an instance of that class.

Learn more about Python class from

brainly.com/question/26497128

#SPJ1

8 0
2 years ago
Other questions:
  • WILL UPVOTE NEED ANSWERS ASAP i have till 4:30
    12·1 answer
  • What type of object can offer the most effective way to display data and calculations in a presentation?
    15·1 answer
  • If a tv was showing a flat black or blue screen or had "snow", what steps would you take to fix it? Give an example of the direc
    11·1 answer
  • Karen is designing a website for her uncle's landscaping business. She wants to ensure that it's engaging and provides a lot of
    5·1 answer
  • Can someone let me join your kingdom if anybody knows this game and plays it as well. ​
    13·1 answer
  • Differences between analog computer and hybrid computer​
    5·2 answers
  • Hot components or sharp edges of computer is an example of what hazard​
    14·1 answer
  • study the picture of the simulation and the graph above. based on the information obtained from your study of the simulation and
    11·1 answer
  • An IPv4 address has 32 bits, so there are 232 (over 4 billion) possible IPv4 addresses. Since the Internet is gaining devices qu
    12·1 answer
  • Kevin would like to ensure that his software runs on a platform that is able to expand and contract as needs change. Which one o
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!