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List the drawbacks of relational database system
A) Repetition of data
B) Inability to s certain information.
A field-groups statement or an insert statement reverses storage space and transfers values. False.
List and also explain the dissimilar stages of DDLC ?
What is the difference between a HAVING CLAUSE and a WHERE CLAUSE? HAVING CLAUSE - HAVING CLAUSE is used only with SELECT statement. - It is normally used in a GROUP BY
What is foreign key? A relation schema r1 derived from an ER schema may contain among its attributes the primary key of another relation schema r2.this attribute is known as a
Consider an information system designed for an online company which provides IT products and services These include desktops, laptops, networking products, IT books, parts, and
What is the use of keyword ISA? The use of keyword ISA is to show that a class is a specialization of another class.
database help
Define access time. Access time is the time from when a read or write request is issued to when data transfer starts.
Write a short note on QBE? Stands for "Query By Example." QBE is a feature involved along with various database applications which gives user-friendly techniques of running da
What is a dataset? A dataset is an in-memory database that is disconnected from any regular database, but has all the significant characteristics of a regular database. Dataset
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