Attributes, rows, and tables all refer to the same thing in relational models:
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Attributes, rows, and tables all refer to the same thing in relational models:
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- SQL stands for Structured Query Language and may alternatively be pronounced as See-Qwell. It was designed to be used with relational database management systems (RDBMS). SQL is a database language used for a variety of database-related tasks, including database creation/deletion, data retrieval/modification, and so on. Data manipulation in SQL is accomplished via the use of queries.Define the term " relational less than " .Computer Science Create a SQL Code for the following ER diagram/Schema. choose any data type you think is appropriate for each of the attributes (int, numeric, varchar, etc.). Make sure that your SQL code includes all the constrains depicted in the schema! User Follows Follows u id follower id u id username u id birthyear User username birthyear Event Participates Participates u id e id e id topic day e id month day Event month topic (a) (b)
- Consider the following ER diagram: storcid address description value Displays Store Memorabilia The above diagram represents information pertaining to stores and the memorabilia that is displayed within the stores. a) Write the SQL statements to create the necessary tables to represent the above diagram, representing as many constraints as possible. Note: you do not need to worry about specifying types for the fields, but you do need to provide suitable foreign key option(s).Question 2 Structured Query Language (SQL) is a standard computer language for relational database management and data manipulation. SQL queries are used to insert, update and modify data. By referring to the Table1 below, write the SQL statements for the following: Table 1: Students ID Names PhoneNumber Country Somalia Age 1234 Aishah 0131234561 18 Absya Ah Meng Bee Chean Malaysia China 4567 0131234562 21 8910 01312345673 20 1112 01312345674 Korea 19 1314 Buchanan 0131234565 Korea 20 (a) Add new column: Ambition Varchar (20). (b) Display Names and Ambition for 20 year old students using SQL. (c) Delete Table Students. (d) Delete column country. (e) Use SQL statements to update all Country names in the Students table from Korea to Malaysia.In relational model terminology, a table is considered as Select one: a. Tuple b. Range c. Relation d. Domain
- What is a Attribute interpolation?The term "interpolation of attributes" is a little vague.Q2: Design Database for the following scenario and Write SQL queries. Create an ERD for the following scenario. Suppose there is a grocery store near your house. Following can be considered for ERD: A grocery store may have more than one employee. A grocery store has exactly one manager. The manager has one or more sales men working under him. Grocery store has more than one portion for the products. • Each product has a barcode, name, expired date. Many customers can busy many products, but each product is bought by only one customer. Each customer will get an invoice for his /her purchase. The bill invoice has an id.
- 32. In a relational model, relations are termed as a. Tuples b. Attributes c. Rows d. Tables97. The column header of table in relational model terminology is classified as a. attribute b. table starter c. table ender d. entity domainDatabase Schema The schema for the Ch07_FACT database is shown below and should be used to answer the next several problems. Click this image to view it in its own tab. FIGURE P7.56 THE CH07_FACT ERD CHECKOUT PATRON PK Check Num PK Pat ID FK1 Book_Num FK2 Pat_ID Check_Out_Date Check_Due_Date Check_In_Date >0-----H- Pat_FName Pat LName Pat_Type BOOK AUTHOR PK Book_Num PK Au ID Book_Title Book_Year Book_Cost Book_Subject FK1 Pat_ID Au_FName Au_LName Au_BirthYear WRITES PK,FK1 Book Num PK,FK2 Au ID The CIS Department at Tiny College maintains the Free Access to Current Technology (FACT) library of e-books. FACT is a collection of current technology e-books for use by faculty and students. Agreements with the publishers allow patrons to electronically check out a book,