7. Explain the following: a. Update Anomaly b. Deletion Anomaly
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- Please help me answer these three questions regarding Oracle database. All are T or F. Explanation is much appreciated as well. Group functions do ignore NULL values Multiple row functions works on each records one by one and they return one result per each record Multiple row functions works on group of records all at once but they also return one result per each data setExplain why it is beneficial to first go through the normalization procedure and then denormalize.6. Describe the deadlock prevention method using data ordering by drawing a picture (no hand-written work). Explicitly include why deadlocks are not possible.
- Please write in plain text format. Please dont copy the one that is already done! 1. ( For the Cities database, discuss one problem with either thecorrectness of the data or what can be easily done with the data that mightoccur if each of the following changes were made:• The state attribute of the City table was allowed to be null• The County table was merged into the State table by removing the Countytable and including a counties column in the State table with the names ofthe counties, plus a websites column in the State table with the websitesfor each county. The county column of the City table would just be thename of the county.2. Normalization The total set of five attributes is: {name, state, district, bill, vote}. This is forvotes of members of the House of Representatives on the bills that come up for avote. The functional dependencies that hold are:◦ {name} → {state, district}◦ {billNum, name} → {vote}• Now convert the above into Third Normal Form. Indicate all primary…25-Create a SQL statement/s to Add/insert the following records in the CLIENTS table: CLIENTS CID CName Gender Address Contact CType 1521 Ahmed Said Male SLL 92214561 Old 1522 Salma Mohammed Female MCT 92384792 New 1523 Faiza Ahmed Female SLL 97451382 Old 1524 Noaman Said Male NZW NewCreate a table of at least 4 columns and fill it with data to simulate the insertion, update, and deletion anomalies. Explain how each of the anomalies would happen and the problem that would arise.
