Which of the following is NOT TRUE about the STUDENTStable structure?t ofField/ColumnData Type / SizeConstraintNameSIDNUMBER(10)Primary KeyNameVARCHAR2(25)Not NullEmailVARCHAR2(25)Uniquea. All columns have constraints.O b. Email must not have any duplicate value.O c. Name must have a value.O d. SID must have a voalue and it can contain duplicatevalues.

Which of the following is NOT TRUE about the STUDENTS table structure? Field/Column Data Type / size Constraint Name SID NUMBER(10) Primary Key Name VARCHAR2(25) Not Null Email VARCHAR2(25) Unique O a. All columns have constraints: O b. Email must not have any duplicate value. O C. Name must havea value. O d. SID must have a value and it can contain duplicate

Which of the following is NOT TRUE about the STUDENTS table structure? Field/Column Data Type / size Constraint Name SID NUMBER(10) Primary Key Name VARCHAR2(25) Not Null Email VARCHAR2(25) Unique O a. All columns have constraints: O b. Email must not have any duplicate value. O C. Name must havea value. O d. SID must have a value and it can contain duplicate

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Open your text editor and create a new document named model.php model.php will contain functions that will connect to a database potentially return PDO statementobjects to the controller for processing. updateMessagesfunction updateMessages($id)This method will take a single parameter of id which is the saved id from the last or latest message displayed. It will conditionally select from the table “messages”, id, name, message, and time. The condition is that the field id is greater than the parameter for id. The return is the PDOStatement object with the row data from the query.
Don't copy from other websties. Objective: To create a JSON for Population census with objects and arrays Scenario: ABC Census Company is maintaining database on the survey taken. Application sends the details of schemes in the form of JSON Help to create a JSON with the information provided. Name Datatype of value Country String State String YearOfSurvey Number TotalPopulation String AgeGroup Object AgeGroup- Object : Name Datatype of value 0-14 Array 15-24 Array 25-44 Array 45-64 Array Above65 Array Array : Name Datatype of value male Number female Number You can assume any data for the mentioned JSON structure, provided it is matching the specified datatype
16-7. Automated Title: In eq_world_map_3.py, we specified the title manually when defining my_layout, which means we have to remember to update the title every time the source file changes. Instead, you can use the title for the data set in the metadata part of the JSON file. Pull this value, assign it to a variable, and use this for the title of the map when you’re defining my_layout.
Question 1 Which of the following properties are true of the set class? Select all that apply. Each element has an index Does not allow duplicate values A set can store zero or more values A set can quickly check if a value is in it
displayComments a. Dependencies: getPostComments, createComments b. Is an async function c. Receives a postId as a parameter d. Creates a section element with document.createElement() e. Sets an attribute on the section element with section.dataset.postId f. Adds the classes 'comments' and 'hide' to the section element g. Creates a variable comments equal to the result of await getPostComments(postId); h. Creates a variable named fragment equal to createComments(comments) i. Append the fragment to the section j. Return the section element In JavaScript please
In java create an application to manage your data base information the database is already created in mysql tables, the tables are fill, So the user can use your database application user friendly Retrieve all data: Given a table name, retrieve all data from the table and present it to the user. Average: Given a table name and a column name, return the average of the column. Here the assumption is that the column type will be numeric (e.g., cost column). Insert: Given a table name, your program should show the column names of that table and ask the users to input new data to the table. In case of errors, your program should directly show the MySQL errors to the users. Assumption 1: Users will enter data according to the database constraints. Assumption 2: Users will input one record at a time. Delete: Given a table name, your program should show the column names of that table and ask the users to input data that they want to delete. Assumption 1: Users will enter data according to the…
PLEASE HELP, WRITE IN VISUAL STUDIO Write a Public Sub called GetData. This sub should connect to the database using a DataAdapter and fill MyDataSet with the entire contents of the table Stats from the database. GetData should be called when frmStats loads.
Given the following link list, please do the following: head 2000 2800 1500 3600 null 17 2800 92 info link 2000- 1500- 63 3600- 45 info link info link info link current 2000 a) Provide the values for each statement. head.info = head.link.link.link current.link = current.link.link.link b) Write the java code to print all info (data) fields stored in the above linked list.
JAVA Script Create a form that has a last name, a first name, an email address, a drop-down listing of 10 cities in Massachusetts. The list is to be sorted (hint: think array), an email address, and a zip code field. Each field is to be process through a validation function. You may use one function for each but if you are creative you should be able to use just one function. The drop-down listing will not require validation because they will be choosing from a list that you are providing. This input from must be styled and show an effect to the user as to which field that are currently providing input.
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Create an anonymous block that displays a course list. Declare a cursor and use the OPEN,FETCH, and CLOSE cursor statements to access the cursor. Use the %ROWTYPE attribute for the cursor.
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