How can gaps appear in values generated by a sequence?

Q: A select operation in a relational database decreases the size of a table by deleting columns that…

A:

Q: Foreign keys are supported for ___ tables only.     InnoDB     MyISAM     Archive     Memory

A: Given :   Foreign keys are supported for ___ tables only.   a InnoDB   b MyISAM…

Q: USE imdb; DELIMITER && CREATE PROCEDURE all_crew(IN movie VARCHAR(400)) BEGIN SELECT primary_title,…

A: CREATE TABLE IF NOT EXISTS `acted_in` (  `idacted_in` int(11) NOT NULL AUTO_INCREMENT,  `idmovies`…

Q: A select procedure in a relational database can shrink a table's size by deleting columns that don't…

A: Answer is

Q: ge table shadowing overhead be r

A:

Q: How can a sequence be used in a database?

A: Use of sequence A sequence is an ordered list of numbers. In a sequence structure, an event or an…

Q: 37. The RDBMS terminology for a row is a. tuple b. relation c. attribute d. degree

A: Please see the next step for answer.

Q: In a relational database, a select operation is used to delete columns that satisfy specific…

A: The select operation is basically an operation which searches data in the table and acquire or…

Q: Removing columns that meet specified criteria is the goal of a select operation in relational…

A: Introduction: Union, intersection, and set difference are the three main relational set operations.…

Q: Metadata about the relations are stored in ________ a. File header b. Data dictionary c. Data query…

A: Given that: Metadata about the relations are stored in ________ a. File header b. Data…

Q: Data dictionary is also called as ________ a. Data log b. System log c. System catalog d. System…

A: Here, Fill in the blank is given with four options.

Q: List two reasons why null values might be introduced into the database.

A: Introducing null values into the database: The two reasons for introducing null values into the…

Q: oblem: implement database in MySQL for music(table: artist, album, track , played) and add multiple…

A: It is defined as an organized collection of structured information, or data, typically stored…

Q: Attributes, rows, and tables all refer to the same thing in relational models:

A: The relational model is the conceptual basis of relational databases. A relational model is a way of…

Q: For this problem create a table called instructor_course_nums. Write a procedure that accepts an…

A: Answer is given below .

Q: An insert anomaly occurs when the database user cannot: A. Add new data B. Modify data C. Delete…

A: Given Question: To choose correct option.

Q: What is Overlap rule?

A: This rule tell us about the entity instance of a super type and it can be the member of multiple…

Q: A multi-level index can be created for :

A: The multilevel indexing segregates the main block into various smaller blocks so that the same can…

Q: State how index numbers can be useful along with their main features,  complete with at least two…

A: Here we have given a brief note on index numbers with couple of examples. You can find the solution…

Q: POSTGRESQL For this problem create a table called instructor_course_nums. Write a procedure that…

A: Brief Introduction: We have to create the instructor_course_num table using sql and the procedure…

Q: Please write these statements for (i), (ii) and (iii) using the data and tables I've presented.…

A: i. SELECT d.NAME, SUM(r.PRICE) AS REVENUE FROM DRIVER d, RIDE r WHERE d.ID=r.DRIVER  GROUP BY…

Q: In the process of deleting rows, columns, and tables, what is an important point to bear in mind is

A: Introduction: Database management systems are created to keep records of numerous linked entities…

Q: Q-1: Fill in the two blanks to only allow tuples of from_id and to id that are unique. cur.execute('…

A: The given query is to create a new table with the fields from_id and to_id. These two can be act as…

Q: Explain the method of partitioning secondary index by term.

A: Explained the method of partitioning secondary index by the term

Q: Describe an algorithm for the selection operation and discuss its cost in Query Processing

A: Different phases of Query processing : The query starts as SQL. Database translates SQL to 1 or…

Q: What causes gaps in a sequence's values?

A: Please refer below for your reference: The cause of gaps in a sequence values is following:

Q: What is the relationship between keys and data types?

A: keys  A key in DBMS is an attribute or a set of attributes that help to uniquely identify a tuple…

Q: Understand the following picture and describe iterative queries.

A: Iterative queries

Q: What is the difference between scalar function and vector function in SQL DATABASE? Note: Question…

A: Answer ; Scalar is a user defined function that is written in SQL and it always return a single…

Q: Use data definition commands, data manipulation commands, and data control commands correctly.

A: Answer the above question are as follows

Q: How is discrepancy computed?

A: Answer: The discrepancy is the lack of agreement or balance. If there is a discrepancy between your…

Q: What function did we use to display a single row function in database?

A: The solution to the given problem is below.

Q: ENROLLMENT StudentID StudentName MajorID MajorName 111 Joe E English 222 Bob History 333 Lisa H…

A: Option 1, None of the above

Q: 2 Q3: Find the top 2 accounts with the maximum number of unique patients on a monthly basis. Patient…

A: select * from ( select * , row_number() over (partition by month,AccountID order by count(distinct…

Q: A select operation in a relational database reduces the size of a table by removing columns that…

A: The question is on relational databases and finding if the statement is true or false.

Q: Can you please give me an example with step-by-step instructions in ABAP programming of how to…

A: The steps are

Q: F= d` + b`.c` Write a

A: F= d` + b`.c`

Q: A data dictionary doesn't provide information about:

A:

Q: 1. Using a linked list store different courses and their prerequisites in chain and based on the…

A: code:-- # course list course=['PF','OOP','Dst','DBMA','OOAD','AI','DP']# taking user input…

Q: Find the total PurchaseAmt for all the orders Find the average PurchaseAmt for all the orders Find…

A: Note: As per the guidelines, can answer the first three sections, please re-submit the question for…

Q: QUESTION 2 In ASN.1 SEQUENCE data type used to list items where order is optional ( not mandatory)…

A: ASN.1 SEQUENCE typically uses the models in order to the collection of variables of a different…

Q: Indexing on retrieval information has an approach such as: Exact-match and partial match search O…

A: Indexing on retrieval information has an approach such as

Q: In handling foreign key violations, the option to reject if the row is referenced in another table…

A: a) Set Null: It is a foreign key which means that if a record in the parent table is deleted, then…

Q: What is metadata, exactly? What is metadata in the context of a result set? When is it useful to use…

A: Introduction: The term "metadata" refers to information that describes other information. In…

Q: When identifying functional dependencies, the sequence/ordering of columns in a database table is…

A: As per our policy, we can solve one question at a time if you need the second answer please post it…

Q: Briefly explain descriptor table

A: Descriptor table: The descriptor table contains three tables. They are: Global descriptor table…

Q: Explain the problems that unnormalized tables have for insert, update, and delete actions

A: Problems that unnormalized tables have for insert, update, and delete actions are:

Q: Consider the following two tables R and S with their instances: R S B с E a XNXXBD V5 233 a b A b с…

A: Please check step 2 for the answer. I have provided the correct answer. Thank you. Do upvote.

Q: The elements in a linear table can be various, but the data elements in the same linear table have…

A: You can tell if a table is linear by looking at how X and Y change. If, as X increases by 1, Y…