SELECT AVG(EC. Num) FROM EC WHERE (DeptName, Num)IN (SELECT DeptName, COUNT(Empld) AS EC(DeptName, Num) FROM EMP GROUP BY DeptName)

Q: convert ERD to relational schema

A: During a research, it has been shown that the car of an employee is parked for around 80% of its…

Q: Define the Data Structure?

A: Data Structure can be defined as the group of data elements which provides an efficient way of…

Q: A collection of data which is stored in a logical form is known as A A field Information C. A…

A: A field is a column which stores unit information in each cell. Information is the collection of raw…

Q: What is Data Definition Language, and how does it work? Give an illustration.

A: The question is define Data Definition Language and explain how does it work.

Q: What is Derived data?

A: The data which is computed on the basis of the other data is known as a derived data. Like array,…

Q: use of ‘key’ in react list

A: Key: Keys help React identify which items have changed, are added, or are removed.  A “key” is a…

Q: Define Bias?

A: Bias is a term in which user thing one way and thinks how the term it was raised.

Q: Define Bias?

A: Bias is an error caused by incorrect assumptions in the learning algorithm. Due to high bias, an…

Q: A _______________ differs from a _______________ in that it provides a means to store and retrieve…

A: Database :  The database is a set of storage locations where the data is stored in tabular form.…

Q: Define Database in: Informal Definition: Formal Definition: Extended Definition

A: NOTE   The above question belongs to Database Management System from Computer Science.   Below is…

Q: Your task is to show all the primary and foreign keys in Schema

A: Primary key is the column which is used to identify read reviews in the table uniquely whereas…

Q: What is modular arithmetic? What is Congruence Modulo? What is Congruence Relation?

A: When we divide two integers we will have an equation that looks like : A/B​=Q remainder R   where,…

Q: Let the size of B [ ] be 27308 and the lower bound be 89899, calculate the upper bound. How would…

A: upper bound=0.303763   Field: The set of genuine numbers and the set of complex numbers each with…

Q: What is data-structure? Describe the types of Data Structures?

A: Data Structure: The data structure can be defined as the data element group, providing an effective…

Q: What is Data Definition Language, and how does it work? Let me give you an example.

A: Introduction:- Below is the complete explanation about Data Definition Language (DDL) and with an…

Q: const numLoops = 10;

A: #include <iostream> using namespace std; const numLoops = 10; int main() {      int x = 0; do…

Q: The arrow diagrams for relations A and B are shown below. Both relations have the domain {a, b, c,…

A: Let's first write down the sets of A and B A = {(a, a), (a, c), (b, d)} B = {(a, a), (d, a), (c, d)}…

Q: clearly what Intensive and Extensive reading are.

A: Task : The task is required is to write down the difference between intensive and extensive…

Q: Define Primary index and Secondary Index

A: The answer is

Q: The goal of the step of the ETL process is to take the source data from all the various sources and…

A: ETL stands for extract, transform and load. Extraction is the process of collecting data from…

Q: Define key term overlap rule?

A: DBMS is a product for putting away and recovering clients' information while considering appropriate…

Q: Define the term composite identifier and give an example other than those used in this book

A: The attributes that uniquely name or identifies the entity instances are called identifiers. The…

Q: When it comes to stored procedures and functions, what are the distinctions?

A:

Q: convert this ER- Diagram into Relational Scheme.

A: LOGIN(LoginID, Login_username, User_passwlrd) USER(Userid, Name, Phone_Number. email,Adress)…

Q: Which advantages does Quinlan point out in (1995) about stored procedures?

A:

Q: Define surrogate primary key

A: Required: Define surrogate primary key

Q: Define surrogate primary key

A: To be determine: Define surrogate primary key

Q: Define surrogate primary key

A: Surrogate primary key A primary key is an attribute or combination of properties that is used to…

Q: en Entity and ent

A: An entity cluster is a "virtual" entity type that is used in the ERD to represent multiple entities…

Q: Construct appropriate relational schemes for each of the E-R diagrams below.

A: paper(title, author) cite(title) Explanation: The attribute "title" is the primary key for the…

Q: What does OODBMS stand for, and what is its purpose?

A: OODBMS stands for Object-Oriented Database Management System. • It is a database management system…

Q: the CFGs given are ambiguous or not

A: The CFGs given are ambiguous or not

Q: 175. In hierarchical structures, the can be nested to create a. simple data structures b. complex…

A: GIVEN: 175. In hierarchical structures, the can be nested to create a. simple data structures…

Q: s between data structured design and dat

A: Discuss the differences and similarities between data structured design and data flow orientated…

Q: What Is Linear Data Structure?

A: Definition of  Linear Data Structure:

Q: Which three levels of abstraction exist for data?

A: Introduction: Describing the critical properties without providing implementation details is known…

Q: Which three levels of abstraction exist for data?

A: The three layers of data abstraction are as follows: Physical stamina: It's the most fundamental…

Q: hat is duplication exactly? What is the purpose? What is the intention of its application? What are…

A: А  duрliсаte  is  аnything  thаt  is  аn  exасt  сорy  оf  аnоther  thing.  Fоr  exаmрle,  with…

Q: what is length attribute ?

A: Length attribute specifies some value.

Q: What is Multivalued dimension?

A: Given:- What is Multivalued dimension?

Q: In C++, _____ provide a convenient way to organize information intofields and records.

A: Data structure

Q: what are User-defined data types ?

A: User-defined data types: The user-defined data type is a data type which derived from an existing…

Q: what are User-defined data types ?

A: Given: what are User-defined data types ?

Q: Computer science MC home Work 7) Explain the operation of selective tuning and indexing techniques.

A: To Do: To explain operations of selective tuning and indexing techniques.

Q: 168. The complete description of database which is described in design phase and is changed rarely…

A: Database Schema  A database schema is the skeleton structure that addresses the sensible perspective…

Q: What is stale data?

A: It is a caching artefact where an item in the cache is not the latest version committed to the data…

Q: What is stale data?

A: Stale data: If a field of a class is completely dependent on the other data value in the class, the…

Q: What is stale data?

A: Stale data: When the value of a field is completely dependent on other data, then a small change in…

Q: What is stale data?

A: Stale data:   When the value of a field is completely dependent on other data, then a small change…

Q: Explain what is materialization and in what way it differs from generalization

A: In computer use, object-oriented viewing is a database that contains query results. For example, it…