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Explain what is DDL?
DDL - Data Definition Language: statements used to define the database structure or schema. Some examples: CREATE - to create objects in the database ALTER - alters the structure of the database DROP - delete objects from the database TRUNCATE - remove all records from a table, including all spaces allocated for the records are removed COMMENT - add comments to the data dictionary RENAME - rename an object
Describe multi key files
draw ER diagram of student entity and course entity where attribute of student entity are student roll, student name, student phone and student address and attribute of course enti
Give an example of Operations from the functions of a bank. For creation of a saving account, you can write: bank::: create -savings-account (customer)->account. For oper
Question 1: (a) Explain the legal meaning of :- (i) Computer Service Person (ii) Data holding (b) Explain how the law ensures Data protection and Security. Qu
Why Like predicate used for? LIKE predicate: The LIKE predicate searches for strings in which have a certain pattern.
The advantages of a database management system (DBMS) include :- Data integrity and elimination of duplication.
Enumerate or state the steps in creating a relevant database of a shop.
What does the extract statement do in extract datasets? The data is written to virtual memory by extract commands.
What is database utility? Database utility is the interface among the ABAP/4 Dictionary and the underlying the SAP system.
Homework chapter 10 no 3
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